{ "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T11:50:47Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 17.4, "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: 01a09573-662b-7340-a0d8-394521b837fb\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: p-chloromercuribenzoic acid\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Bat", "usd": 0.0, "recall": true }, "codex": { "seconds": 84.3, "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: 01a09573-6633-7b43-9846-04ebaa7a078c\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: p-chloromercuribenzoic acid\nRegistry id: vr.tr.p-chloromercuribenzoic-acid\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames f" } }, "enrichment": { "pass": 3, "engine": "claude", "producedAt": "2026-10-06T12:00:00Z", "ingestedAt": "2026-10-06T08:54:23+00:00", "fields": [ "agent_conduct", "ethics", "failure_modes_and_hazards", "owners", "standards_and_regulation", "visual_identification" ] }, "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-Q229946", "registryId": "vr.tr.p-chloromercuribenzoic-acid", "name": "p-chloromercuribenzoic acid", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q229946/", "model": { "registry_id": "vr.tr.p-chloromercuribenzoic-acid", "name": "p-chloromercuribenzoic acid", "purpose": "Enable an agent to recognise p-chloromercuribenzoic acid, assess the identity and condition of a sample, and determine its suitability for a proposed laboratory use.", "definition": "p-Chloromercuribenzoic acid is an organomercury compound with a chloromercury group para to the carboxyl group on a benzene ring, used as a thiol-reactive reagent in biochemical research.", "scope_statement": "This model owns the substance identity represented by vr.tr.p-chloromercuribenzoic-acid in PHY / PHY.MAT, including composition, sample quality, solution state, experimentally supported reactivity, and applicable handling constraints.", "in_scope": [ "Para-substituted chloromercuribenzoic acid identity and verified identifier mappings", "Sample composition, purity, impurities, and analytical evidence", "Solid-state properties and condition-dependent solution behaviour", "Thiol-reactivity evidence and suitability as a biochemical reagent", "Mercury-related hazards, storage condition, and disposal requirements" ], "out_of_scope": [ "Manufacturing processes and synthesis equipment", "Commercial products, packaging, and supplier business records", "Complete enzyme or protein models", "Experimental protocols and laboratory operating procedures", "Distinct salts, positional isomers, and reaction products as independently owned substances" ], "distinguishing_features": [ "Require structural evidence that the carboxyl group and chloromercuri substituent occupy para positions on the benzene ring.", "Distinguish a ring-bound Hg-Cl group from the directly ring-bound chlorine of p-chlorobenzoic acid.", "Distinguish the benzoic-acid functionality from the sulfonic-acid functionality of p-chloromercuribenzenesulfonic acid.", "Resolve free acid, carboxylate salt, and hydroxymercuri descriptions by composition and structure rather than accepting supplier synonym lists as proof of equivalence.", "Use CAS 59-85-8 as a corroborating identifier alongside structure and sample documentation; the supplier SDS identifies the compound under that number. [Supplier SDS](https://www.sigmaaldrich.com/BE/en/sds/sigma/c5913?sdslanguage=EN)" ], "characteristics": [ { "name": "Structural identity", "kind": "category", "unit_or_values": "Verified structure encoding, para substitution, mercury-bound ligand, acid or salt form", "why_it_matters": "Separates the registered substance from similarly named compounds and chemically distinct forms." }, { "name": "Identifier reconciliation", "kind": "relation", "unit_or_values": "CAS, PubChem CID, EC number, and authoritative record with retrieval date", "why_it_matters": "Prevents records for related mercury reagents from being merged through ambiguous names." }, { "name": "Assay and impurity profile", "kind": "measurement", "unit_or_values": "Mass fraction or percentage with method, analyte, and reporting basis", "why_it_matters": "An elemental mercury assay alone does not establish molecular purity or reactive reagent content." }, { "name": "Mercury content", "kind": "measurement", "unit_or_values": "mg Hg/g sample or mass percent Hg, with analytical method", "why_it_matters": "Supports composition checks and accounting for mercury in samples and waste." }, { "name": "Physical and thermal condition", "kind": "state", "unit_or_values": "Observed phase and appearance; thermal event in °C with pressure and decomposition qualifier", "why_it_matters": "Distinguishes sample observations from reference properties and melting from decomposition." }, { "name": "Dissolved concentration", "kind": "measurement", "unit_or_values": "mol/L or mg/mL with solvent, pH, temperature, and dissolved-fraction method", "why_it_matters": "Nominal preparation concentration may differ from the concentration available for reaction." }, { "name": "Solution speciation", "kind": "state", "unit_or_values": "Supported acid-base and mercury-ligand assignments under stated conditions; unknown where unmeasured", "why_it_matters": "The identity on the bottle does not establish which species are present in an assay." }, { "name": "Thiol-reactive performance", "kind": "measurement", "unit_or_values": "Reactive equivalents, rate, or target-response curve with substrate and assay conditions", "why_it_matters": "Connects a sample to demonstrated biochemical performance without assuming universal target specificity." }, { "name": "Hazard and regulatory applicability", "kind": "category", "unit_or_values": "Jurisdiction, SDS revision, GHS classifications, exposure-limit basis, and waste classification", "why_it_matters": "Makes handling decisions depend on documented requirements applicable to the actual material." } ], "affordances": [ "Reconcile a sample label with verified structure and identifiers.", "Compare reagent lots using molecular identity, assay basis, and impurity evidence.", "Assess whether a proposed solvent and buffer can support a defined dissolved reagent concentration.", "Evaluate whether evidence supports using a sample to investigate thiol-dependent biochemical behaviour.", "Identify when precipitation, chemical change, or missing analytical evidence prevents use.", "Route mercury-containing material to applicable storage, containment, and waste procedures." ], "agent_conduct": { "may": [ "Explain p-chloromercuribenzoic acid as a thiol-reactive research reagent in general terms.", "Report hazards and mercury waste rules from safety data sheets." ], "must_not": [ "Handle it without the protection required for organomercury compounds.", "Dispose of mercury-containing waste in drains or ordinary refuse.", "Allow students to use it without trained supervision.", "Supply it to people outside a laboratory setting." ], "requires_human": [ "Approving purchase, transfer or disposal of mercury reagents." ] }, "ethics": { "considerations": [ "Mercury compounds are highly toxic and persist in the environment and food chains.", "Safer reagents should be preferred where they exist." ], "affected_parties": [ "Laboratory workers", "Waste handlers", "Communities and wildlife exposed to mercury" ] }, "owners": { "steward": "The laboratory or business that holds it; chemical safety authorities regulate supply and use.", "master_systems": [] }, "visual_identification": [ "Identified by container label, chemical name and identifier, and certificate of analysis rather than by appearance alone." ], "failure_modes_and_hazards": [ "Mercury poisoning through skin, inhalation or ingestion.", "Persistent environmental contamination.", "Harm to aquatic life." ], "standards_and_regulation": [ "Globally Harmonized System of Classification and Labelling of Chemicals (GHS), United Nations.", "Minamata Convention on Mercury, United Nations Environment Programme." ], "what_it_is_for": [ "p-Chloromercuribenzoic acid is encountered in biochemical research as a reagent that reacts with thiol groups in proteins and other molecules.", "It is used to investigate the contribution of accessible sulfhydryl groups to enzyme activity and protein function.", "Its organomercury composition makes controlled laboratory handling and hazardous waste management relevant to its use." ] }, "sources": [ { "id": "wikidata", "title": "Wikidata item Q229946: p-chloromercuribenzoic acid", "url": "https://www.wikidata.org/wiki/Q229946", "url_status": "live", "what_it_supports": "identity and sense of the item", "checked_by": "wikidata-api" }, { "id": "wikipedia-en", "title": "Wikipedia: 4-Chloromercuribenzoic acid", "url": "https://en.wikipedia.org/wiki/4-Chloromercuribenzoic_acid", "url_status": "live", "what_it_supports": "general description of the item", "checked_by": "wikidata-api sitelink" } ], "structure": { "bundles": [ { "id": "chemical-identity-and-boundaries", "name": "Chemical identity and boundaries", "description": "Establish which chemical structure the registry entry denotes and prevent confusion with neighbouring reagents.", "rationale": "The name compresses substitution position, organomercury connectivity, and acid functionality, each of which affects identity.", "layers": [ { "id": "structural-recognition", "name": "Structural recognition", "description": "Resolve ring substitution and mercury connectivity.", "findings": [ { "id": "para-chloromercuri-structure", "name": "Para chloromercuri structure", "description": "Require a structure that distinguishes chloromercuri substitution from direct aromatic chlorination.", "questions": [ { "text": "What authoritative structure establishes the para relationship between the carboxyl group and the Hg-Cl substituent?", "kind": "definition", "id": "para-chloromercuri-structure-q01" }, { "text": "Which identity evidence excludes p-chlorobenzoic acid, other positional isomers, and p-chloromercuribenzenesulfonic acid?", "kind": "boundary", "id": "para-chloromercuri-structure-q02" } ] } ] }, { "id": "names-and-chemical-forms", "name": "Names and chemical forms", "description": "Reconcile identifiers and distinguish aliases from changes in composition.", "findings": [ { "id": "identifier-and-form-reconciliation", "name": "Identifier and form reconciliation", "description": "Treat hydroxymercuri labels, salts, and abbreviations as identity questions requiring evidence.", "questions": [ { "text": "Which CAS, PubChem, EC, and structure records consistently identify the registered free acid?", "kind": "provenance", "id": "identifier-and-form-reconciliation-q01" }, { "text": "When a source lists a hydroxymercuri name as a synonym, does its structural evidence support equivalence or describe a different species?", "kind": "boundary", "id": "identifier-and-form-reconciliation-q02" }, { "text": "Does a sample supplied as a salt require a relation to a distinct substance record rather than identification as the free acid?", "kind": "boundary", "id": "identifier-and-form-reconciliation-q03" } ] } ] } ] }, { "id": "sample-composition-and-quality", "name": "Sample composition and quality", "description": "Determine what a particular sample contains and whether its analytical evidence supports the intended use.", "rationale": "Mercury content, molecular purity, and biochemical reagent activity are different measures of sample quality.", "layers": [ { "id": "assay-interpretation", "name": "Assay interpretation", "description": "Separate elemental measurements from compound-specific assays.", "findings": [ { "id": "purity-basis", "name": "Purity basis", "description": "Record what each reported percentage actually measures.", "questions": [ { "text": "Does the lot assay quantify intact p-chloromercuribenzoic acid, elemental mercury, or another analytical response?", "kind": "measurement", "id": "purity-basis-q01" }, { "text": "What method, uncertainty, and dry-weight or as-received basis support the reported purity?", "kind": "provenance", "id": "purity-basis-q02" } ] } ] }, { "id": "impurities-and-lot-condition", "name": "Impurities and lot condition", "description": "Assess constituents and changes that could distort reagent concentration or experimental response.", "findings": [ { "id": "composition-confidence", "name": "Composition confidence", "description": "Link lot acceptance to relevant impurity measurements and current condition.", "questions": [ { "text": "What evidence quantifies water, residual solvent, inorganic mercury, or other organomercury constituents where relevant?", "kind": "measurement", "id": "composition-confidence-q01" }, { "text": "Which impurity or condition limits would disqualify this lot for the proposed assay?", "kind": "action", "id": "composition-confidence-q02" } ] } ] } ] }, { "id": "physical-state-and-solution-behaviour", "name": "Physical state and solution behaviour", "description": "Describe the material under stated physical conditions and establish what is actually present in solution.", "rationale": "Physical constants and nominal stock concentrations cannot substitute for measurements under the intended conditions.", "layers": [ { "id": "solid-and-thermal-properties", "name": "Solid and thermal properties", "description": "Characterise the solid without confusing thermal decomposition with a phase transition.", "findings": [ { "id": "qualified-physical-constants", "name": "Qualified physical constants", "description": "Require conditions and event identification for reported physical properties.", "questions": [ { "text": "What phase, appearance, and solid-form evidence are available for the sample at a stated temperature?", "kind": "measurement", "id": "qualified-physical-constants-q01" }, { "text": "Do reported melting or boiling values represent observed phase transitions, decomposition, or unavailable measurements?", "kind": "measurement", "id": "qualified-physical-constants-q02" } ] } ] }, { "id": "dissolution-and-speciation", "name": "Dissolution and speciation", "description": "Resolve solvent compatibility, dissolved amount, and possible changes in chemical form.", "findings": [ { "id": "available-solution-species", "name": "Available solution species", "description": "Distinguish weighed reagent from dissolved, chemically characterised reagent.", "questions": [ { "text": "What solubility is measured in the intended solvent or buffer at the stated pH and temperature?", "kind": "measurement", "id": "available-solution-species-q01" }, { "text": "What evidence establishes acid-base state and mercury-ligand speciation after dissolution?", "kind": "measurement", "id": "available-solution-species-q02" }, { "text": "What observations or measurements require rejection or reassessment of a precipitated or changing stock solution?", "kind": "action", "id": "available-solution-species-q03" } ] } ] } ] }, { "id": "thiol-reactivity-and-assay-interpretation", "name": "Thiol reactivity and assay interpretation", "description": "Organise evidence for reaction with thiols and for the meaning of biochemical responses.", "rationale": "Using this reagent to interpret protein function requires separating chemical reaction evidence from conclusions about a biological target.", "layers": [ { "id": "reaction-evidence", "name": "Reaction evidence", "description": "Establish substrate-dependent reactivity under defined conditions.", "findings": [ { "id": "thiol-reaction-performance", "name": "Thiol reaction performance", "description": "Record demonstrated reaction behaviour rather than assuming a fixed activity for every sample and substrate.", "questions": [ { "text": "Which primary experiments establish reaction with a defined thiol or protein cysteine under specified conditions?", "kind": "provenance", "id": "thiol-reaction-performance-q01" }, { "text": "What stoichiometry, rate, and concentration dependence were measured, and how was adduct formation distinguished from loss of activity?", "kind": "measurement", "id": "thiol-reaction-performance-q02" } ] } ] }, { "id": "experimental-interpretation", "name": "Experimental interpretation", "description": "Bound conclusions drawn from reagent-induced changes in a biological assay.", "findings": [ { "id": "specificity-and-interference", "name": "Specificity and interference", "description": "Require controls for reagent consumption, physical interference, and alternative explanations of inhibition.", "questions": [ { "text": "Could buffer components, reducing agents, or competing thiols consume or alter the reagent before it reaches the intended target?", "kind": "boundary", "id": "specificity-and-interference-q01" }, { "text": "Which controls distinguish a thiol-associated response from precipitation, assay interference, or broader protein damage?", "kind": "action", "id": "specificity-and-interference-q02" }, { "text": "What evidence supports reversibility or rescue in this specific system, and what inference remains unjustified?", "kind": "boundary", "id": "specificity-and-interference-q03" } ] } ] } ] }, { "id": "mercury-hazards-and-material-lifecycle", "name": "Mercury hazards and material lifecycle", "description": "Connect sample condition and mercury inventory to documented handling and disposal constraints.", "rationale": "The supplier SDS reports acute toxicity and aquatic hazards, making route-specific exposure and mercury-containing waste essential model concerns. [Supplier SDS](https://www.sigmaaldrich.com/BE/en/sds/sigma/c5913?sdslanguage=EN)", "layers": [ { "id": "hazard-applicability", "name": "Hazard applicability", "description": "Resolve classifications and exposure requirements for the actual material and jurisdiction.", "findings": [ { "id": "applicable-hazard-evidence", "name": "Applicable hazard evidence", "description": "Keep hazard classifications tied to source revision, material form, and regulatory context.", "questions": [ { "text": "Which current SDS and jurisdiction-specific classifications apply to this solid or formulated solution?", "kind": "provenance", "id": "applicable-hazard-evidence-q01" }, { "text": "Which exposure limits, if any, apply to this compound or its mercury-compound category, and are values expressed as mercury?", "kind": "measurement", "id": "applicable-hazard-evidence-q02" }, { "text": "Which documented controls apply to the intended operation and its plausible exposure routes?", "kind": "action", "id": "applicable-hazard-evidence-q03" } ] } ] }, { "id": "storage-and-waste-state", "name": "Storage and waste state", "description": "Track continued fitness for use and the disposition of mercury after use.", "findings": [ { "id": "storage-and-mercury-accounting", "name": "Storage and mercury accounting", "description": "Treat unused solid, stocks, reaction mixtures, and contaminated consumables as distinct material states requiring documented decisions.", "questions": [ { "text": "What verified storage conditions and stability evidence apply separately to the supplied solid and prepared solutions?", "kind": "provenance", "id": "storage-and-mercury-accounting-q01" }, { "text": "How much mercury is assigned to remaining reagent, reaction mixtures, and contaminated waste?", "kind": "measurement", "id": "storage-and-mercury-accounting-q02" }, { "text": "Which authorised waste route applies, and what evidence prevents treating loss of thiol reactivity as removal of mercury hazard?", "kind": "action", "id": "storage-and-mercury-accounting-q03" } ] } ] } ] }, { "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 a recall-based description; no sources were consulted.", "Verify the supplied material's acid or salt form, purity, solubility conditions and current safety classification before use.", "Melting behavior, exposure limits and jurisdiction-specific regulatory identifiers are omitted because they require verification." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of p-chloromercuribenzoic acid 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": "59-85-8", "note": "Identifies p-chloromercuribenzoic acid." }, { "scheme": "Molecular formula", "value_or_pattern": "C7H5ClHgO2", "note": "The chlorine is bonded to mercury, not directly to the benzene ring." }, { "scheme": "Biochemical reagent abbreviation", "value_or_pattern": "PCMB", "note": "Common abbreviation; not a globally unique identifier." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of p-chloromercuribenzoic acid 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": [ "Modification of accessible cysteine thiol groups in proteins.", "Investigation of whether enzyme activity depends on reactive thiol groups.", "Experimental inhibition of thiol-sensitive enzymes." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of p-chloromercuribenzoic acid 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": "357.16", "unit": "g/mol" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of p-chloromercuribenzoic acid 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": [ "Contains mercury and requires precautions against toxic exposure and environmental release.", "Reacts with multiple accessible thiols, so inhibition alone does not identify a particular cysteine or establish its catalytic role.", "Thiol-containing buffer components or reducing agents can consume the reagent and confound experiments.", "Poor aqueous solubility can complicate preparation and interpretation of nominal reagent concentrations." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of p-chloromercuribenzoic acid 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": "p-Chloromercuribenzenesulfonic acid", "difference": "Has a sulfonic acid group instead of a carboxylic acid group, changing its solubility and membrane permeability." }, { "name": "p-Hydroxymercuribenzoic acid", "difference": "Has a hydroxymercury group in place of the chloromercury group." }, { "name": "p-Chlorobenzoic acid", "difference": "Has chlorine directly bonded to the aromatic ring and contains no mercury." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of p-chloromercuribenzoic acid this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Which authoritative records resolve supplier use of hydroxymercuribenzoic-acid names alongside chloromercuribenzoic-acid names, and what PubChem CID and EC number belong to the exact registered structure?", "What experimentally supported solubility, acid-base behaviour, and mercury-ligand speciation apply across relevant buffers, pH values, and temperatures?", "Which reported thermal values are genuine melting measurements, and is any boiling point experimentally meaningful before decomposition?", "What primary evidence establishes thiol reaction stoichiometry, selectivity, interference, and reversibility under representative assay conditions?", "What validated stability periods, exposure-limit categories, and jurisdiction-specific waste requirements apply to the solid and its working solutions?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 16, "questions": 31 } }