{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.diphenylmethylpiperazine","code":"thing-q5279744","url":"https://ver.cy/models/thing/q5279744/","name":"diphenylmethylpiperazine","alternateNames":[],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.MAT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"Diphenylmethylpiperazine usually denotes 1-(diphenylmethyl)piperazine, a substituted piperazine in which one ring nitrogen is bonded to a carbon bearing two phenyl groups and one hydrogen.","purpose":"Enable an agent to recognise diphenylmethylpiperazine, assess the identity and condition of a material sample, and determine whether evidence supports its intended handling or use.","scope":{"in":["The molecular identity of 1-(diphenylmethyl)piperazine and its verified synonyms","Distinction between neutral parent, protonated material and isolated salt forms","Sample purity, water, residual solvents and structurally related impurities","Physical properties tied to chemical form and measurement conditions","Evidence supporting storage, handling and suitability for an intended use"],"out":["The entire family of drugs containing a diphenylmethylpiperazine substructure","Independent models of hydrochloride salts and other separately registered forms","Manufacturing processes and reaction recipes","Finished formulations containing the compound","Clinical efficacy, prescribing and patient treatment","Supplier organisations and commercial product catalogues"],"boundaries":[]},"distinguishingFeatures":["The candidate structure has a piperazine nitrogen bonded to a methine carbon carrying two unsubstituted phenyl groups; the other nitrogen retains an N-H bond. Identity reference: [NIST Chemistry WebBook](https://webbook.nist.gov/cgi/cbook.cgi?ID=841-77-0).","The benzhydryl group contains two phenyl rings on one methine carbon, distinguishing it from benzylpiperazine and phenylpiperazine.","Additional covalent substitution on the remaining piperazine nitrogen identifies a derivative rather than this parent compound.","Counterions and protonation must be checked before treating a sample as the neutral parent; a salt is not established as identical merely by sharing the parent name.","A match to the diphenylmethylpiperazine substructure alone is insufficient: the complete molecular structure must match."],"structure":{"bundles":[{"id":"parent-identity-and-boundaries","name":"Parent identity and boundaries","description":"Establishes which complete molecule the registry name denotes.","layers":[{"id":"complete-structure","name":"Complete structure","description":"Matches the piperazine ring, benzhydryl attachment and remaining N-H site.","findings":[{"id":"parent-structure-match","name":"Parent structure match","description":"Recognition requires the complete parent structure rather than the presence of its substructure.","questions":[{"text":"Does the registry's originating record identify 1-(diphenylmethyl)piperazine as an individual compound?","id":"parent-structure-match-q01","kind":"definition"},{"text":"Does the candidate structure retain an unsubstituted second piperazine nitrogen and two unsubstituted phenyl rings?","id":"parent-structure-match-q02","kind":"boundary"}]}]},{"id":"names-and-identifiers","name":"Names and identifiers","description":"Connects synonyms and external identifiers to a structure-specific record.","findings":[{"id":"identifier-concordance","name":"Identifier concordance","description":"An identifier match is accepted only when its associated structure and chemical form agree.","questions":[{"text":"Which inspected records connect benzhydrylpiperazine, CAS 841-77-0 and PubChem CID 70048 to the same neutral structure?","id":"identifier-concordance-q01","kind":"provenance"},{"text":"Does an existing Vercy publication already own this compound under a synonym?","id":"identifier-concordance-q02","kind":"boundary"}]}]}]},{"id":"chemical-form-and-assay","name":"Chemical form and assay","description":"Separates molecular identity from the composition of material actually supplied or measured.","layers":[{"id":"protonation-and-counterions","name":"Protonation and counterions","description":"Records whether the material is neutral, a characterised salt or a solution with condition-dependent speciation.","findings":[{"id":"form-assignment","name":"Form assignment","description":"Form assignment requires evidence for counterions and stoichiometry where a salt is claimed.","questions":[{"text":"What evidence establishes neutral parent versus a salt, including counterion identity and stoichiometry?","id":"form-assignment-q01","kind":"measurement"},{"text":"Should the supplied form link to a separate salt model while retaining a parent-compound relationship?","id":"form-assignment-q02","kind":"boundary"}]}]},{"id":"parent-content-and-contaminants","name":"Parent content and contaminants","description":"Interprets assay and impurities on an explicit compositional basis.","findings":[{"id":"assay-specificity","name":"Assay specificity","description":"Purity evidence must distinguish parent content from responses contributed by other basic or chromatographically unresolved substances.","questions":[{"text":"Does the assay specifically quantify diphenylmethylpiperazine, and is its result mass fraction, chromatographic area or titration-derived content?","id":"assay-specificity-q01","kind":"measurement"},{"text":"What water, solvent and related-compound measurements are needed to calculate parent-equivalent content?","id":"assay-specificity-q02","kind":"measurement"}]}]}]},{"id":"analytical-and-physical-state","name":"Analytical and physical state","description":"Assesses whether a sample matches the parent and whether property data describe its actual condition.","layers":[{"id":"structural-verification","name":"Structural verification","description":"Combines analytical methods that can discriminate the parent from substituted derivatives.","findings":[{"id":"orthogonal-identity-evidence","name":"Orthogonal identity evidence","description":"Identity assessment should combine evidence for molecular composition and connectivity.","questions":[{"text":"Which NMR, mass-spectral or other reference data were inspected, and which chemical form was measured?","id":"orthogonal-identity-evidence-q01","kind":"provenance"},{"text":"Do the observations support the benzhydryl methine and parent piperazine substitution pattern without unexplained additional substituents?","id":"orthogonal-identity-evidence-q02","kind":"measurement"}]}]},{"id":"condition-dependent-properties","name":"Condition-dependent properties","description":"Ties phase, thermal behaviour and solubility to form, purity and experimental conditions.","findings":[{"id":"comparable-property-records","name":"Comparable property records","description":"A property value becomes actionable only when its material basis and measurement conditions are known.","questions":[{"text":"What measured melting interval, phase and decomposition behaviour apply to the confirmed form and purity?","id":"comparable-property-records-q01","kind":"measurement"},{"text":"What solvent, temperature and pH accompany solubility data, and do boiling-point reports specify pressure and experimental provenance?","id":"comparable-property-records-q02","kind":"provenance"}]}]}]},{"id":"handling-and-use-qualification","name":"Handling and use qualification","description":"Connects evidence about this material to storage, handling and use decisions.","layers":[{"id":"applicable-safety-evidence","name":"Applicable safety evidence","description":"Identifies safety and regulatory records that apply to the actual chemical form.","findings":[{"id":"form-specific-hazard-basis","name":"Form-specific hazard basis","description":"Hazard classification and handling requirements need traceable records for the identified substance and jurisdiction.","questions":[{"text":"Which current SDS and jurisdiction-specific records support the classification of the supplied diphenylmethylpiperazine form?","id":"form-specific-hazard-basis-q01","kind":"provenance"},{"text":"What controls and disposal requirements follow from those records, and is an exposure limit established or merely unlocated?","id":"form-specific-hazard-basis-q02","kind":"action"}]}]},{"id":"storage-and-release","name":"Storage and release","description":"Uses storage history and analytical acceptance criteria to judge a sample's suitability.","findings":[{"id":"evidence-based-sample-disposition","name":"Evidence-based sample disposition","description":"Release, retesting or rejection depends on documented sample condition and the requirements of its intended use.","questions":[{"text":"What evidence supports storage conditions and retest intervals for this form, packaging and impurity profile?","id":"evidence-based-sample-disposition-q01","kind":"provenance"},{"text":"Do identity, parent assay and impurity results meet the intended use specification, or must the sample be held for further testing?","id":"evidence-based-sample-disposition-q02","kind":"action"}]}]}]},{"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.","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.","questions":[{"text":"Which of these check these first hold for the sense of diphenylmethylpiperazine this model covers, and on what evidence?","id":"evidence-confidence-notes-q01","kind":"provenance"}]},{"id":"evidence-identifiers","name":"Identifiers and schemes","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these identifiers and schemes hold for the sense of diphenylmethylpiperazine this model covers, and on what evidence?","id":"evidence-identifiers-q01","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.","questions":[{"text":"Which of these real-world use hold for the sense of diphenylmethylpiperazine this model covers, and on what evidence?","id":"evidence-real-world-use-q01","kind":"provenance"}]},{"id":"evidence-measurements","name":"Typical measurements","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these typical measurements hold for the sense of diphenylmethylpiperazine this model covers, and on what evidence?","id":"evidence-measurements-q01","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.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of diphenylmethylpiperazine this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Describe it as a substituted piperazine and a building block for some antihistamine drugs.","Report hazards from its safety data sheet."],"mustNot":["Handle it without the protective equipment its safety data sheet requires.","Supply it for making controlled or unapproved drugs.","Confuse it with other benzhydryl piperazines that are themselves medicines."],"requiresHuman":["Approving supply to third parties or bulk disposal."]},"ethics":{"considerations":["Chemical intermediates can be diverted, so suppliers have a duty to know their customers."],"affectedParties":["Laboratory and plant workers","Communities affected by illicit drug production"]},"owners":{"steward":"The laboratory or manufacturer that holds it; the supplier answers for its identity and labelling.","roles":[],"masterSystems":[]},"relations":[{"target":"Q11173","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.diphenylmethylpiperazine","Wikidata: Q5279744 (https://www.wikidata.org/wiki/Q5279744)"]},"properties":{"applicability":"required","items":["Molecular identity: Candidate: 1-(diphenylmethyl)piperazine; synonym: benzhydrylpiperazine","Identity cross-references: Candidate neutral parent: CAS 841-77-0; PubChem CID 70048; verify against structure","Neutral-parent formula and molar mass: C17H20N2; approximately 252.36 g/mol","Chemical form: Neutral parent, identified salt, solution with specified acid-base conditions, or unresolved","Parent-compound assay: Mass fraction %, with method and as-is, dry or free-base-equivalent basis","Impurity profile: Individual impurity mass fraction %, water %, residual solvents mg/kg, and analytical detection limits","Physical and thermal state: Observed phase and appearance at temperature in °C; melting interval in °C with method; decomposition observations","Solubility and acid-base behaviour: Solubility in g/L or mol/L with solvent, temperature and pH; pKa values with medium and method","Hazard and regulatory evidence: Form-specific SDS, jurisdiction, revision date, supported GHS classification, identifier records and exposure-limit status"]},"recognition":{"applicability":"required","items":["A white to off-white crystalline solid; identity needs analysis and a reliable label."]},"capabilities":{"applicability":"required","items":["Resolve a labelled material to the parent structure or flag an unresolved salt or derivative.","Compare a sample's analytical evidence with a verified parent-compound reference.","Calculate parent-equivalent quantity from confirmed chemical form and assay.","Assess whether sample condition and impurities satisfy an explicit use specification.","Select handling and storage requirements from applicable safety and stability evidence.","Route records for salts, derivatives and formulations to neighbouring models."]},"hazards":{"applicability":"required","items":["Irritating to skin, eyes and airways.","Harmful if swallowed."]},"interfaces":{"applicability":"required","items":["Globally Harmonized System of Classification and Labelling of Chemicals (GHS), United Nations."]},"context":{"applicability":"required","items":["Diphenylmethylpiperazine is encountered in chemical research and pharmaceutical synthesis as a building block for more complex molecules.","Laboratories use it where the diphenylmethyl-substituted piperazine structure is required, with the exact isomer and supplied chemical form established before use."]}},"sources":[{"title":"Wikidata item Q5279744: diphenylmethylpiperazine","url":"https://www.wikidata.org/wiki/Q5279744","note":"identity and sense of the item"},{"title":"Wikipedia: Diphenylmethylpiperazine","url":"https://en.wikipedia.org/wiki/Diphenylmethylpiperazine","note":"general description of the item"}],"openQuestions":["Does the originating registry record confirm the individual neutral parent, and does an existing Vercy model already cover it under benzhydrylpiperazine or another synonym?","Which EC identifier and jurisdiction-specific regulatory records unambiguously apply to the parent rather than a salt or commercial mixture?","Which experimentally supported melting, boiling or decomposition, solubility and pKa values are available with chemical form and measurement conditions?","Which analytical methods and reference materials distinguish the parent from likely related impurities and support a defensible mass-fraction assay?","What current evidence establishes form-specific hazards, exposure-limit status, storage stability and retest criteria?"],"resources":{"spec":"/models/things/publications/thing-q5279744/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q5279744/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T09:12:30Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:31+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}