{ "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T10:16:06Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 19.5, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0951c-bb7c-7e00-bc8f-3634bf43a227\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: hexamethylindanopyran\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 043", "usd": 0.0, "recall": true }, "codex": { "seconds": 83.7, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0951c-bb83-7c72-b58c-6aa24a988952\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: hexamethylindanopyran\nRegistry id: vr.tr.hexamethylindanopyran\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into t" } }, "enrichment": { "pass": 3, "engine": "claude", "producedAt": "2026-10-06T12:00:00Z", "ingestedAt": "2026-10-06T08:41:57+00:00", "fields": [ "agent_conduct", "ethics", "owners" ] }, "gate": { "passed": true, "version": "1.0", "at": "2026-10-07T10:10:28+00:00", "evidence": [ "completeness 1.00", "sense: Wikidata description", "2 live sources", "review by codex: pass" ] } }, "metaModel": { "id": "THING-Q2268349", "registryId": "vr.tr.hexamethylindanopyran", "name": "hexamethylindanopyran", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q2268349/", "model": { "registry_id": "vr.tr.hexamethylindanopyran", "name": "hexamethylindanopyran", "purpose": "Enable an agent to identify hexamethylindanopyran, assess the composition and condition of a supplied material, and determine evidence-supported uses and handling constraints.", "definition": "Hexamethylindanopyran, commonly called galaxolide or HHCB, is a synthetic polycyclic musk with molecular formula C18H26O used as a fragrance ingredient.", "scope_statement": "This model owns the substance identity of hexamethylindanopyran under vr.tr.hexamethylindanopyran in PHY / PHY.MAT, including stereochemical composition, material grade, measured properties, fragrance performance, and substance-specific safety and environmental evidence.", "in_scope": [ "Chemical identity and correspondence among hexamethylindanopyran, HHCB, and galaxolide names", "Stereoisomer composition, assay, impurities, and supplied dilution", "Physical properties with measurement conditions and material composition", "Musk fragrance function and compatibility with intended formulation conditions", "Human exposure, environmental fate, and jurisdiction-specific substance requirements" ], "out_of_scope": [ "Complete perfumes, detergents, cosmetics, and other products containing the substance", "Manufacturing plant design and detailed synthesis procedures", "Other musk substances treated as interchangeable solely because of similar odor", "Packaging and transport equipment as independent objects", "Wastewater treatment facilities and ecosystem models beyond their interactions with HHCB" ], "distinguishing_features": [ "Resolve the unqualified substance name against the FDA hexamethylindanopyran record and PubChem CID 91497 before accepting a supplier synonym; [FDA substance record](https://precision.fda.gov/ginas/app/ui/substances/14170060AT).", "Check correspondence with CAS 1222-05-5 and the HHCB/galaxolide identity rather than relying on a fragrance trade name; [ECHA identity record](https://echa.europa.eu/da/legislation-obligation/-/obligations/100.013.588).", "Confirm the molecular structure associated with C18H26O; molecular formula or a musk odor alone cannot distinguish it from structurally different substances; [PubChem Galaxolide](https://pubchem.ncbi.nlm.nih.gov/compound/Galaxolide).", "Distinguish an unspecified stereochemical identity from an explicitly identified stereoisomer, such as the separately recorded (4S,7R) form; [PubChem stereoisomer record](https://pubchem.ncbi.nlm.nih.gov/compound/Hexamethylindanopyran_-_4S_7R).", "Distinguish neat HHCB from a solvent-containing commercial preparation by composition and assay rather than transferring the preparation's properties to the substance." ], "characteristics": [ { "name": "Resolved chemical identity", "kind": "relation", "unit_or_values": "Registry id linked to verified structure, CAS number, PubChem CID, and EC number where confirmed", "why_it_matters": "Prevents supplier aliases, stereoisomer records, and formulated products from being mistaken for the same material." }, { "name": "Stereochemical specification", "kind": "category", "unit_or_values": "Unspecified stereochemistry, characterized isomer mixture, or explicitly identified stereoisomer", "why_it_matters": "Determines which analytical and odor-performance evidence applies." }, { "name": "HHCB assay", "kind": "measurement", "unit_or_values": "% mass fraction with analytical method and uncertainty", "why_it_matters": "Supports active-content dosing and separates purity from intentional dilution." }, { "name": "Carrier and impurity composition", "kind": "measurement", "unit_or_values": "Component identities and concentrations in % mass fraction or mg/kg", "why_it_matters": "Carriers and impurities can affect handling, odor, compatibility, and hazard assessment." }, { "name": "Physical state and transitions", "kind": "state", "unit_or_values": "Observed phase at stated temperature and pressure; melting or freezing range in °C", "why_it_matters": "Defines whether a particular grade can be transferred, sampled, or incorporated under intended conditions." }, { "name": "Volatility", "kind": "measurement", "unit_or_values": "Vapor pressure in Pa at stated °C; boiling point in °C at stated pressure", "why_it_matters": "Informs fragrance release and exposure estimates without confusing reduced-pressure and atmospheric measurements." }, { "name": "Solubility and partitioning", "kind": "measurement", "unit_or_values": "Solubility in mg/L by solvent and temperature; dimensionless log Kow with method", "why_it_matters": "Supports formulation decisions and assessment of distribution between water and organic phases." }, { "name": "Musk odor performance", "kind": "measurement", "unit_or_values": "Threshold concentration, intensity scale, and persistence duration with matrix and sensory protocol", "why_it_matters": "Connects the supplied composition and dose to its intended fragrance function." }, { "name": "Hazard and regulatory status", "kind": "category", "unit_or_values": "Endpoint, classification system, jurisdiction, legal status, effective date, and evidence source", "why_it_matters": "Separates scientific findings, supplier classifications, proposals, and binding requirements." } ], "affordances": [ "Authenticate a supplied HHCB material against structural identifiers and analytical evidence.", "Calculate the amount of a characterized preparation required to deliver a specified mass of HHCB.", "Compare grades for odor performance and compatibility under a defined formulation test.", "Assess storage and transfer conditions using properties measured for the actual supplied composition.", "Identify applicable exposure controls and use constraints from dated, jurisdiction-specific evidence.", "Interpret HHCB monitoring results while distinguishing the parent substance, transformation products, and sampling matrices." ], "agent_conduct": { "may": [ "Describe galaxolide, its use as a fragrance and its presence in the environment, citing sources.", "Read product labels and safety data sheets for it." ], "must_not": [ "Discharge concentrated fragrance chemicals into drains or water bodies.", "Claim products are free of synthetic musks without checking.", "Downplay findings on its persistence and accumulation in the environment.", "Handle bulk material without the safety data sheet's protections." ], "requires_human": [ "Approving use of the substance in new products." ] }, "ethics": { "considerations": [ "Synthetic musks persist in waters and build up in wildlife and people.", "Fragrance-sensitive people need honest labelling." ], "affected_parties": [ "Aquatic wildlife", "People sensitive to fragrances", "Workers handling it" ] }, "owners": { "steward": "The manufacturer or importer; chemical regulators keep registration records.", "master_systems": [ "Chemical substance registers" ] }, "what_it_is_for": [ "Hexamethylindanopyran is used as a musk fragrance ingredient in perfumes, personal care products and household cleaning products.", "It is encountered in fragrance manufacturing as a supplied chemical or mixture and in environmental monitoring because residues can enter wastewater and aquatic environments." ], "standards_and_regulation": [ "Regulation (EC) No 1907/2006, adopted by the European Parliament and the Council of the European Union, establishes REACH obligations applicable to its manufacture, import and supply within scope.", "Regulation (EC) No 1272/2008, adopted by the European Parliament and the Council of the European Union, governs classification, labeling and packaging of the substance and mixtures containing it within scope." ], "visual_identification": [ "A container label identifying hexamethylindanopyran or HHCB provides an initial identity cue that must agree with the accompanying chemical documentation.", "Supplier information indicating a neat substance or a diluted fragrance mixture helps distinguish presentations that may look similar.", "Bulk appearance is not distinctive enough to distinguish this compound reliably from other fragrance materials." ], "failure_modes_and_hazards": [ "Release to aquatic environments can harm aquatic organisms and contribute to persistent environmental contamination.", "Environmental accumulation can expose organisms beyond the original point of release.", "Confusing a diluted commercial mixture with the neat substance can lead to incorrect exposure assessments and handling decisions.", "Solvents or other ingredients in supplied mixtures can introduce additional hazards that cannot be inferred from the compound name alone." ] }, "sources": [ { "id": "wikidata", "title": "Wikidata item Q2268349: hexamethylindanopyran", "url": "https://www.wikidata.org/wiki/Q2268349", "url_status": "live", "what_it_supports": "identity and sense of the item", "checked_by": "wikidata-api" }, { "id": "wikipedia-en", "title": "Wikipedia: Galaxolide", "url": "https://en.wikipedia.org/wiki/Galaxolide", "url_status": "live", "what_it_supports": "general description of the item", "checked_by": "wikidata-api sitelink" } ], "structure": { "bundles": [ { "id": "hhcb-identity", "name": "HHCB identity and boundaries", "description": "Establishes what the registry name denotes and how external identifiers map to it.", "rationale": "HHCB aliases and stereoisomer-specific records can otherwise cause incorrect evidence matching.", "layers": [ { "id": "structural-identity", "name": "Structural identity", "description": "Connects the name to a chemically explicit identity.", "findings": [ { "id": "identifier-concordance", "name": "Identifier concordance", "description": "Require agreement among the resolved structure and authoritative identifier records.", "questions": [ { "text": "Which structure, CAS number, PubChem CID, and EC number consistently identify the registry's unqualified hexamethylindanopyran entry?", "kind": "definition", "id": "identifier-concordance-q01" }, { "text": "Which authoritative records establish that HHCB and galaxolide denote this identity rather than a particular commercial preparation?", "kind": "provenance", "id": "identifier-concordance-q02" } ] } ] }, { "id": "stereochemical-boundary", "name": "Stereochemical boundary", "description": "Keeps general substance identity distinct from characterized stereochemical forms.", "findings": [ { "id": "isomer-specific-evidence", "name": "Isomer-specific evidence", "description": "Attach stereochemical qualifications to evidence without creating unsupported registry subdivisions.", "questions": [ { "text": "Does the source describe unspecified HHCB, a measured stereoisomer mixture, or one explicitly configured stereoisomer?", "kind": "boundary", "id": "isomer-specific-evidence-q01" }, { "text": "What evidence permits a property measured for one stereochemical composition to be applied to the supplied material?", "kind": "provenance", "id": "isomer-specific-evidence-q02" } ] } ] } ] }, { "id": "hhcb-material-composition", "name": "Supplied composition and grade", "description": "Describes the HHCB actually present in a sample or commercial preparation.", "rationale": "Active content, carriers, and impurities determine whether substance-level evidence fits a supplied lot.", "layers": [ { "id": "active-content", "name": "Active content and dilution", "description": "Separates HHCB concentration from the composition of its carrier.", "findings": [ { "id": "assay-and-carrier", "name": "Assay and carrier identity", "description": "Record total HHCB content and intentional diluents on an explicit concentration basis.", "questions": [ { "text": "What is the total HHCB mass fraction, and does the reported assay include all relevant stereoisomers?", "kind": "measurement", "id": "assay-and-carrier-q01" }, { "text": "Which carrier substances are present, and is the stated percentage based on mass, volume, or chromatographic area?", "kind": "definition", "id": "assay-and-carrier-q02" } ] } ] }, { "id": "lot-quality", "name": "Lot quality and change", "description": "Tracks unwanted constituents and changes relevant to fragrance-grade acceptance.", "findings": [ { "id": "impurity-and-aging-profile", "name": "Impurity and aging profile", "description": "Relate lot acceptance to measured composition and validated storage history.", "questions": [ { "text": "Which impurities or transformation products are detected, by what method, and at what reporting limits?", "kind": "measurement", "id": "impurity-and-aging-profile-q01" }, { "text": "What changes in assay, chromatographic profile, color, or odor require retesting or rejection of this HHCB grade?", "kind": "action", "id": "impurity-and-aging-profile-q02" } ] } ] } ] }, { "id": "hhcb-physical-behavior", "name": "Physical behavior under use conditions", "description": "Organizes condition-dependent data needed to handle HHCB and predict its distribution.", "rationale": "Values measured for a diluted preparation or at reduced pressure must not become unqualified substance constants.", "layers": [ { "id": "phase-and-volatility", "name": "Phase and volatility", "description": "Characterizes thermal behavior and vapor release for a specified composition.", "findings": [ { "id": "qualified-thermal-data", "name": "Qualified thermal data", "description": "Record phase, transition temperatures, and volatility with their experimental conditions.", "questions": [ { "text": "What phase and melting or freezing range are observed for the identified neat material or supplied grade?", "kind": "measurement", "id": "qualified-thermal-data-q01" }, { "text": "What vapor-pressure and boiling-point measurements are available, and what temperature, pressure, purity, and methods qualify them?", "kind": "measurement", "id": "qualified-thermal-data-q02" } ] } ] }, { "id": "solubility-and-partitioning", "name": "Solubility and partitioning", "description": "Describes how HHCB distributes between formulation and environmental phases.", "findings": [ { "id": "matrix-dependent-distribution", "name": "Matrix-dependent distribution", "description": "Distinguish dissolved HHCB from dispersed material and separate measured partition data from estimates.", "questions": [ { "text": "What are the measured water and relevant formulation-solvent solubilities at stated temperatures?", "kind": "measurement", "id": "matrix-dependent-distribution-q01" }, { "text": "Which partition coefficients are measured or estimated, and do surfactants or carriers limit their applicability?", "kind": "boundary", "id": "matrix-dependent-distribution-q02" } ] } ] } ] }, { "id": "hhcb-fragrance-function", "name": "Fragrance function and formulation fit", "description": "Connects HHCB composition and dose to a specified musk fragrance objective.", "rationale": "Chemical identity alone does not establish sensory equivalence or compatibility between grades.", "layers": [ { "id": "sensory-performance", "name": "Sensory performance", "description": "Defines reproducible odor observations for the material being evaluated.", "findings": [ { "id": "musk-performance-evidence", "name": "Musk performance evidence", "description": "Qualify odor character, intensity, and persistence by dose, matrix, and test procedure.", "questions": [ { "text": "What odor character, threshold, and persistence are demonstrated for the specified HHCB composition in the intended matrix?", "kind": "measurement", "id": "musk-performance-evidence-q01" }, { "text": "How do carrier choice and stereoisomer composition affect whether two HHCB grades meet the same sensory target?", "kind": "boundary", "id": "musk-performance-evidence-q02" } ] } ] }, { "id": "formulation-compatibility", "name": "Formulation compatibility", "description": "Tests incorporation and performance under the intended product conditions.", "findings": [ { "id": "dose-and-stability", "name": "Dose and stability", "description": "Translate active content into a testable formulation dose and verify compatibility.", "questions": [ { "text": "What quantity of the supplied preparation delivers the target HHCB mass fraction in the final formulation?", "kind": "action", "id": "dose-and-stability-q01" }, { "text": "Under the intended pH, temperature, light, and oxidant exposure, does HHCB retain acceptable composition and fragrance performance?", "kind": "measurement", "id": "dose-and-stability-q02" } ] } ] } ] }, { "id": "hhcb-exposure-and-controls", "name": "Exposure evidence and use controls", "description": "Connects HHCB hazard evidence to actual exposure conditions and applicable requirements.", "rationale": "A use decision must distinguish substance hazards from preparation hazards and current rules from proposals.", "layers": [ { "id": "human-exposure", "name": "Human exposure", "description": "Assesses route-specific evidence for the handling or use scenario.", "findings": [ { "id": "route-specific-assessment", "name": "Route-specific assessment", "description": "Tie toxicological endpoints and exposure estimates to the tested material and route.", "questions": [ { "text": "Which dermal, inhalation, and oral endpoints have reliable HHCB evidence, and what composition was tested?", "kind": "provenance", "id": "route-specific-assessment-q01" }, { "text": "What exposure limits or assessment values apply to the scenario, and which handling controls follow from them?", "kind": "action", "id": "route-specific-assessment-q02" } ] } ] }, { "id": "regulatory-applicability", "name": "Regulatory applicability", "description": "Tracks dated requirements for the substance and its intended use.", "findings": [ { "id": "classification-and-use-status", "name": "Classification and use status", "description": "Separate binding classifications and restrictions from supplier notifications and assessment proposals.", "questions": [ { "text": "Which GHS or CLP classifications are legally applicable in the destination jurisdiction on the decision date?", "kind": "provenance", "id": "classification-and-use-status-q01" }, { "text": "What concentration, product-category, labeling, or fragrance-standard requirements govern the proposed HHCB use?", "kind": "action", "id": "classification-and-use-status-q02" } ] } ] } ] }, { "id": "hhcb-environmental-fate", "name": "Environmental fate and release", "description": "Supports interpretation of HHCB releases, monitoring, and transformation.", "rationale": "Disappearance from water alone cannot establish destruction or absence of environmental exposure.", "layers": [ { "id": "parent-and-transformation-products", "name": "Parent substance and transformation products", "description": "Separates HHCB measurements from products formed during treatment or environmental aging.", "findings": [ { "id": "fate-evidence", "name": "Fate evidence", "description": "Record degradation and transformation evidence with test conditions and analytical identity.", "questions": [ { "text": "What biodegradation or other transformation rates are supported for HHCB under specified test conditions?", "kind": "measurement", "id": "fate-evidence-q01" }, { "text": "Which transformation products are analytically confirmed, and are they reported separately from parent HHCB?", "kind": "boundary", "id": "fate-evidence-q02" } ] } ] }, { "id": "compartment-exposure", "name": "Compartment exposure and release decisions", "description": "Relates monitored concentrations to transfer, accumulation, and ecological effects.", "findings": [ { "id": "release-and-removal-interpretation", "name": "Release and removal interpretation", "description": "Distinguish destruction from transfer to sludge or other compartments when assessing a release.", "questions": [ { "text": "What evidence quantifies HHCB sorption, bioaccumulation, and aquatic effects, with concentrations and exposure durations?", "kind": "measurement", "id": "release-and-removal-interpretation-q01" }, { "text": "Does the proposed treatment destroy HHCB or transfer it elsewhere, and what release or disposal controls follow?", "kind": "action", "id": "release-and-removal-interpretation-q02" } ] } ] } ] }, { "id": "evidence-and-external-alignment", "name": "Evidence and external alignment", "description": "What the world already says about this thing, gathered so the model can be checked against it.", "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.", "layers": [ { "id": "reported-evidence", "name": "Reported evidence", "description": "Findings from the breadth pass, kept separate from the structural claims.", "findings": [ { "id": "evidence-confidence-notes", "name": "Check these first", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "This is recalled information, not a researched assessment.", "Verify stereoisomer composition, purity and physical constants for the specific material or grade.", "Check current regulatory status, hazard classification and any use restrictions before relying on this description for compliance." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of hexamethylindanopyran this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-identifiers", "name": "Identifiers and schemes", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "scheme": "CAS Registry Number", "value_or_pattern": "1222-05-5", "note": "Commonly assigned to galaxolide (HHCB); does not specify a commercial formulation or its purity." }, { "scheme": "Molecular formula", "value_or_pattern": "C18H26O", "note": "Describes elemental composition, not stereochemistry." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of hexamethylindanopyran this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-standards-and-regulation", "name": "Standards and regulation", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "European Union REACH Regulation (EC) No 1907/2006, administered through ECHA and national authorities, provides the framework for substance registration and chemical risk management.", "European Union CLP Regulation (EC) No 1272/2008 governs chemical classification, labelling and packaging; the applicable substance or mixture classification requires verification." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of hexamethylindanopyran this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-real-world-use", "name": "Real-world use", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Musk fragrance ingredient in perfumes and personal-care products.", "Fragrance ingredient in laundry detergents, fabric conditioners and household cleaning products." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of hexamethylindanopyran this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-measurements", "name": "Typical measurements", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "quantity": "Molar mass", "typical_range": "258.40", "unit": "g/mol" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of hexamethylindanopyran this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-failure-modes-and-hazards", "name": "Failure modes and hazards", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Release through wastewater can lead to environmental contamination.", "Its lipophilic character supports partitioning into sludge, sediments and biological tissues.", "Aquatic toxicity and environmental persistence warrant assessment; precise hazard categories require verification.", "Commercial dilutions can have handling hazards arising from their solvents as well as the fragrance substance." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of hexamethylindanopyran this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-neighbours", "name": "Neighbouring kinds and how to tell them apart", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "name": "Tonalide (AHTN)", "difference": "Another polycyclic musk, but a chemically distinct ketone; HHCB contains a cyclic ether." }, { "name": "Macrocyclic musks", "difference": "Their defining structural feature is a large ring, whereas HHCB has a fused polycyclic framework." }, { "name": "Commercial galaxolide fragrance preparations", "difference": "Preparations may contain solvents and other ingredients; their concentration and properties differ from those of the substance itself." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of hexamethylindanopyran this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Does the registry intend the unqualified chemical identity or a particular commercial stereoisomer mixture, and is an existing world model already authoritative for it?", "Which EC identifier and composition specification best match this entry, including the distinction between neat HHCB and marketed dilutions?", "Which primary measurements establish melting behavior, boiling point, vapor pressure, and solubility for sufficiently characterized material?", "Which hazard classifications, exposure limits, and use restrictions are binding in each intended jurisdiction, and which remain proposals or voluntary standards?", "How strongly do stereoisomer composition and transformation products affect fragrance performance, environmental persistence, and the transferability of toxicity evidence?" ], "statistics": { "bundles": 7, "layers": 13, "findings": 19, "questions": 31 } }