{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.monounsaturated-fatty-acid","code":"thing-q61738980","url":"https://ver.cy/models/thing/q61738980/","name":"monounsaturated fatty acid","alternateNames":["oleic acids","undecylenic acids","erucic acids"],"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":"A monounsaturated fatty acid, in this sense, is a fatty acid whose carbon chain contains exactly one carbon-carbon multiple bond, either a double bond or a triple bond, with individual members distinguished by chain length, bond type, bond position and double-bond geometry where applicable.","purpose":"Enable an agent to recognise a monounsaturated fatty acid, assess the identity and condition of a particular material, and determine suitable handling, analysis and transformation.","scope":{"in":["Class membership requires exactly one carbon-carbon multiple bond, either a double bond or a triple bond.","Structural distinctions include carbon-chain length, branching, multiple-bond type and position, and double-bond geometry where applicable.","Identification covers individual molecular species and their relationship to the class.","Sample assessment covers composition, purity, isomer distribution and degradation state.","Material assessment covers physical behaviour, analytical evidence and handling constraints for an identified member and grade."],"out":["Complete models of triglycerides, phospholipids and other molecules containing fatty-acyl residues","Food, cosmetic, pharmaceutical and industrial formulations containing monounsaturated fatty acids","Complete models of fatty-acid salts and other derivatives","Manufacturing plants and extraction or synthesis processes","Dietary recommendations, clinical outcomes and whole-organism lipid metabolism"],"boundaries":[]},"distinguishingFeatures":["The molecular structure must qualify as a fatty acid; one carbon-carbon double or triple bond alone does not make an arbitrary organic acid a member.","Exactly one carbon-carbon multiple bond, either double or triple, is required within the chain; the carboxyl carbonyl is not counted.","Chain length, multiple-bond type and position must be resolved to distinguish members; monounsaturated fatty acid does not uniquely identify oleic acid.","Double-bond geometry must be recorded where applicable; monounsaturation alone does not establish cis geometry, and cis/trans geometry does not apply to a triple bond.","A free fatty acid must be distinguished from a fatty-acyl residue measured within an ester and from a mixture reported only as total monounsaturated fatty acids."],"structure":{"bundles":[{"id":"fatty-acid-class-and-member-identity","name":"Fatty acid class and member identity","description":"Establish whether the subject is a monounsaturated fatty acid and how specifically it has been identified.","layers":[{"id":"class-membership","name":"Class membership","description":"Test fatty acid identity and the defining degree of carbon-chain unsaturation.","findings":[{"id":"one-carbon-carbon-double-bond","name":"One carbon-carbon double bond","description":"Membership requires a fatty acid with exactly one carbon-carbon double bond; the carboxyl carbonyl does not contribute to that count.","questions":[{"text":"What structural evidence establishes both fatty acid identity and exactly one carbon-carbon double bond?","id":"one-carbon-carbon-double-bond-q01","kind":"definition"},{"text":"Does the record describe a molecular species, the entire class or a mixture containing members?","id":"one-carbon-carbon-double-bond-q02","kind":"boundary"}]}]},{"id":"member-resolution","name":"Member resolution","description":"Resolve individual members without assuming that a familiar example represents the class.","findings":[{"id":"structure-linked-identifiers","name":"Structure-linked identifiers","description":"Names and external identifiers must match the specified chain, double-bond position, geometry and chemical form.","questions":[{"text":"Which verified structure and preferred name identify this member beyond the label monounsaturated fatty acid?","id":"structure-linked-identifiers-q01","kind":"definition"},{"text":"Which read reference confirms that each supplied identifier refers to this exact structure and form?","id":"structure-linked-identifiers-q02","kind":"provenance"}]}]}]},{"id":"chain-and-double-bond-specificity","name":"Chain and double-bond specificity","description":"Capture the structural distinctions that separate members and isomers.","layers":[{"id":"chain-constitution-and-position","name":"Chain constitution and position","description":"Describe carbon-chain structure and locate the double bond using an explicit convention.","findings":[{"id":"unambiguous-chain-description","name":"Unambiguous chain description","description":"A chain description needs carbon count, any branching and a double-bond locant; positional shorthand must retain its numbering convention.","questions":[{"text":"How many carbon atoms are present, including the carboxyl carbon, and is the chain branched?","id":"unambiguous-chain-description-q01","kind":"definition"},{"text":"Where is the double bond, and is its position expressed from the carboxyl end or the methyl end?","id":"unambiguous-chain-description-q02","kind":"definition"}]}]},{"id":"geometry-and-isomer-composition","name":"Geometry and isomer composition","description":"Resolve double-bond geometry and distinguish a single isomer from an isomer mixture.","findings":[{"id":"geometry-requires-evidence","name":"Geometry requires evidence","description":"The class label establishes neither cis geometry nor isomeric purity; both require member-specific evidence.","questions":[{"text":"What geometry is assigned to the double bond, and what analytical or reference evidence supports it?","id":"geometry-requires-evidence-q01","kind":"provenance"},{"text":"What proportions of positional and geometric isomers are present, and which remain unresolved by the method?","id":"geometry-requires-evidence-q02","kind":"measurement"}]}]}]},{"id":"chemical-form-and-analytical-composition","name":"Chemical form and analytical composition","description":"Keep chemical form, sample composition and the meaning of analytical results aligned.","layers":[{"id":"free-acid-and-bound-residue","name":"Free acid and bound residue","description":"Distinguish the modelled free acid from related salts, esters and analytical derivatives.","findings":[{"id":"preserve-original-chemical-form","name":"Preserve original chemical form","description":"A measurement of a released or derivatised fatty-acyl component must retain the original sample form and preparation history.","questions":[{"text":"Was the member originally present as a free acid, a carboxylate or an esterified residue in a named lipid?","id":"preserve-original-chemical-form-q01","kind":"boundary"},{"text":"Did hydrolysis, transesterification or another preparation step change the chemical form before measurement?","id":"preserve-original-chemical-form-q02","kind":"provenance"}]}]},{"id":"purity-and-reporting-basis","name":"Purity and reporting basis","description":"Interpret member abundance and impurities against explicit sample and method definitions.","findings":[{"id":"composition-with-explicit-denominator","name":"Composition with explicit denominator","description":"Reported purity or total monounsaturated content needs a denominator and a method; a chromatographic area percentage must not silently become a mass percentage.","questions":[{"text":"Is the reported percentage relative to the whole sample, total fatty acids, total lipid or detected chromatographic signal?","id":"composition-with-explicit-denominator-q01","kind":"measurement"},{"text":"Which method, calibration and separation limits support the reported member content and impurity profile?","id":"composition-with-explicit-denominator-q02","kind":"measurement"}]}]}]},{"id":"material-condition-and-permitted-operations","name":"Material condition and permitted operations","description":"Assess the physical and chemical state of an identified sample and the operations supported by its evidence.","layers":[{"id":"phase-and-oxidative-condition","name":"Phase and oxidative condition","description":"Evaluate condition-dependent physical behaviour and evidence of degradation.","findings":[{"id":"member-specific-state-assessment","name":"Member-specific state assessment","description":"Phase and transition data must refer to a defined member or mixture, while oxidative condition must be assessed using suitable sample measurements.","questions":[{"text":"What phase and transition behaviour are observed at the relevant temperature and pressure for this composition?","id":"member-specific-state-assessment-q01","kind":"measurement"},{"text":"Which measured oxidation indicators and exposure history determine whether this sample meets its intended-use specification?","id":"member-specific-state-assessment-q02","kind":"action"}]}]},{"id":"handling-and-transformation-boundaries","name":"Handling and transformation boundaries","description":"Connect member-specific handling evidence to intended operations and resulting chemical identities.","findings":[{"id":"evidence-bounded-use","name":"Evidence-bounded use","description":"Handling decisions require records matched to the actual material, and transformations require reassessment of class membership and chemical form.","questions":[{"text":"Which current safety data, grade requirements and applicable restrictions govern handling and the intended use of this identified material?","id":"evidence-bounded-use-q01","kind":"action"},{"text":"Will the proposed operation consume or relocate the double bond, alter its geometry or convert the acid into a derivative requiring another model?","id":"evidence-bounded-use-q02","kind":"boundary"}]}]}]},{"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 monounsaturated fatty acid this model covers, and on what evidence?","id":"evidence-confidence-notes-q01","kind":"provenance"}]},{"id":"evidence-kinds","name":"Kinds and varieties","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these kinds and varieties hold for the sense of monounsaturated fatty acid this model covers, and on what evidence?","id":"evidence-kinds-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 monounsaturated fatty acid this model covers, and on what evidence?","id":"evidence-identifiers-q01","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.","questions":[{"text":"Which of these standards and regulation hold for the sense of monounsaturated fatty acid this model covers, and on what evidence?","id":"evidence-standards-and-regulation-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 monounsaturated fatty acid 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 monounsaturated fatty acid this model covers, and on what evidence?","id":"evidence-measurements-q01","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.","questions":[{"text":"Which of these failure modes and hazards hold for the sense of monounsaturated fatty acid this model covers, and on what evidence?","id":"evidence-failure-modes-and-hazards-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 monounsaturated fatty acid this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Explain what monounsaturated fatty acids are and where they occur from scientific sources.","Read and report fat composition from food labels."],"mustNot":["Give personalised diet advice for a medical condition.","Present contested health claims about fats as settled.","Mislabel the fat composition of a food or oil.","Promote products with health claims that are not authorised where they are sold."],"requiresHuman":["Diet changes for people with medical conditions."]},"ethics":{"considerations":["Diet advice affects health and is often driven by marketing.","Food labelling must be honest so people can choose."],"affectedParties":["Consumers","People with heart or metabolic disease","Food producers"]},"owners":{"steward":"Nobody owns them; food producers answer for labels, and food authorities for the rules.","roles":[],"masterSystems":["Food composition databases"]},"relations":[{"target":"Q2250497","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.monounsaturated-fatty-acid","Wikidata: Q61738980 (https://www.wikidata.org/wiki/Q61738980)"]},"properties":{"applicability":"required","items":["Identity level: class; identified molecular species; characterised mixture; unresolved sample","Carbon-chain constitution: total carbon count including carboxyl carbon; branching positions and substituents","Carbon-carbon double-bond count: integer count per molecule; exactly 1 for class membership","Double-bond position: locant with explicit numbering convention, such as delta or n/omega notation; unresolved","Double-bond geometry: E/Z or cis/trans where applicable, with notation specified; unresolved; not applicable","Chemical-form relationship: free acid; corresponding carboxylate or salt; esterified residue in a named parent molecule","Sample composition: mass fraction or mole fraction of named species and isomers; explicit analytical denominator","Physical state and transition behaviour: solid, liquid or multiphase at stated temperature in °C and pressure in kPa; measured transition range where available","Oxidative condition: measured oxidation indicators with method, units and sampling date; assessed against a stated specification; unknown","Member-specific identifiers and safety records: verified CAS, EC or PubChem records where applicable; matching safety data sheet and jurisdiction"]},"recognition":{"applicability":"not-applicable","items":[]},"capabilities":{"applicability":"required","items":["Classify a structurally characterised fatty acid by checking its carbon-carbon double-bond count.","Resolve and compare members by chain constitution, double-bond position and geometry.","Interpret analytical results while preserving whether they describe free acids, derivatised analytes or total fatty-acyl composition.","Assess whether a sample meets an explicitly stated composition, isomer and degradation specification.","Choose storage and handling conditions using evidence for the identified member, grade and sample state.","Assess proposed esterification, hydrogenation or other transformations and identify when their products require a neighbouring model."]},"hazards":{"applicability":"required","items":["Oils rich in these fats oxidise and go rancid when stored badly.","Industrial trans isomers carry health risks unlike the common cis forms."]},"interfaces":{"applicability":"required","items":["Regulation (EU) No 1169/2011 on the provision of food information to consumers, European Union."]},"context":{"applicability":"required","items":["Monounsaturated fatty acids occur in animal fats, plant oils and biological lipids, where their chain structure influences material properties.","They are studied in lipid analysis and used as starting materials for chemical transformations and formulated products."]}},"sources":[{"title":"Wikidata item Q61738980: monounsaturated fatty acid","url":"https://www.wikidata.org/wiki/Q61738980","note":"identity and sense of the item"},{"title":"Wikipedia: Monounsaturated fat","url":"https://en.wikipedia.org/wiki/Monounsaturated_fat","note":"general description of the item"}],"openQuestions":["Which authoritative fatty acid definition should govern inclusion of unusually short, branched, cyclic or additionally functionalised members?","Does the registry intend this entry to cover only free acids or also use monounsaturated fatty acid as a reporting category for esterified fatty-acyl residues?","Which existing Vercy models own fatty acids, individual members, salts and lipid-bound residues, and where should this entry link to avoid duplicate ownership?","Which analytical methods and reference materials adequately resolve the positional and geometric isomers relevant to intended applications?","Which member- and grade-specific physical data, oxidation acceptance criteria and jurisdictional safety records are needed before operational decisions can be supported?"],"resources":{"spec":"/models/things/publications/thing-q61738980/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q61738980/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T11:23:23Z","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":"not-applicable","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 2026-10-07T12:16:33+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.recognition":"Membership in this chemical class cannot be established visually because identifying the carbon-chain unsaturation requires chemical analysis."},"score":1.0}}