{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.unsaturated-fatty-acid","code":"thing-q2250497","url":"https://ver.cy/models/thing/q2250497/","name":"unsaturated fatty acid","alternateNames":["(5aR,5bR,7aS,10R,11aS,11bR,13aS,13bR)-5a,5b,8,8,10,11a,13b-heptamethyl-3-propan-2-yl-1,2,4,5,6,7,7a,9,10,11,11b,12,13,13a-tetradecahydrocyclopenta[a]chrysene","linoleic acid(d4)","Methyl-(5E,7E,9E,14Z,17Z) eicosapentaenoate","icosapent methyl","Methyl-(5Z,7E,9E,14Z,17Z)-eicosapentaenoate","brassidic acid","9,12,13-trihydroxyoctadeca-10,15-dienoic acid","2-hydroxy-22-methyltetracosanoic acid","Corticatic acid A","4,5,27,34,38,42,45-Heptahydroxy-19-oxo-25,43-heptatetracontadiene-2,32,35,46-tetraynoic acid","6-hydroxy-7Z,9E-Octadecadiene-11,13,15,17-tetraynoic acid","6-hydroxy-7E,9E-Octadecadiene-11,13,15,17-tetraynoic acid"],"kind":"thing","status":"published","version":"0.2.0-wave.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 fatty acid with one or more carbon-carbon double or triple bonds within its chain, including fatty acids with triple bonds and familiar double-bond examples such as monounsaturated oleic acid and polyunsaturated linoleic acid, alpha-linolenic acid, EPA and DHA; cis and trans forms of double bonds differ in effects.","purpose":"Let an agent handle unsaturated fatty acids by structure, food sources, labelling and health information, without personal dietary advice.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Its carbon chain contains at least one carbon-carbon double or triple bond.","These fatty acids are usually liquid at room temperature.","Some are essential in the diet.","They are prone to oxidation."],"structure":{"bundles":[{"id":"structure","name":"Structure","description":"Chemistry.","layers":[{"id":"bonds","name":"Bonds","description":"Number and position.","findings":[{"id":"bonds-finding","name":"Bonds","description":"Double bonds.","questions":[{"text":"How many double bonds are there, and where?","kind":"definition"},{"text":"Is it cis or trans?","kind":"definition"}]}]},{"id":"name","name":"Name","description":"Nomenclature.","findings":[{"id":"name-finding","name":"Name","description":"Nomenclature.","questions":[{"text":"What is its common and systematic name?","kind":"definition"},{"text":"What is its omega number?","kind":"definition"}]}]}]},{"id":"food","name":"Food","description":"Sources and labels.","layers":[{"id":"sources","name":"Sources","description":"Foods.","findings":[{"id":"sources-finding","name":"Sources","description":"Food sources.","questions":[{"text":"Which foods provide it, according to composition data?","kind":"provenance"},{"text":"How much per serving?","kind":"measurement"}]}]},{"id":"labels","name":"Labels","description":"Nutrition table.","findings":[{"id":"labels-finding","name":"Labels","description":"Labels.","questions":[{"text":"How are unsaturated fats shown on labels here?","kind":"provenance"},{"text":"Are health claims authorised?","kind":"provenance"}]}]}]},{"id":"health","name":"Health","description":"Guidance.","layers":[{"id":"guidelines","name":"Guidelines","description":"Public advice.","findings":[{"id":"guidelines-finding","name":"Guidelines","description":"Dietary guidelines.","questions":[{"text":"What do national guidelines say about these fats?","kind":"provenance"},{"text":"Which authority issued them?","kind":"provenance"}]}]},{"id":"advice","name":"Advice","description":"Personal.","findings":[{"id":"advice-finding","name":"Advice","description":"Advice limit.","questions":[{"text":"Is the user asking for personal diet or supplement advice?","kind":"boundary"},{"text":"How should they be referred to a clinician or dietitian?","kind":"action"}]}]}]},{"id":"storage","name":"Storage","description":"Stability.","layers":[{"id":"oxidation","name":"Oxidation","description":"Rancidity.","findings":[{"id":"oxidation-finding","name":"Oxidation","description":"Oxidation.","questions":[{"text":"How can oils be stored to reduce rancidity?","kind":"action"},{"text":"What are the signs of rancid oil?","kind":"definition"}]}]},{"id":"trans","name":"Trans fats","description":"Rules.","findings":[{"id":"trans-finding","name":"Trans fats","description":"Trans fat rules.","questions":[{"text":"What limits apply to industrial trans fats here?","kind":"provenance"},{"text":"How are they formed?","kind":"definition"}]}]}]}]},"agentConduct":{"may":["Explain the chemistry of unsaturated fatty acids and read fat declarations on labels.","Advise on storage that limits oxidation, from food safety guidance."],"mustNot":["Give personal diet advice or prescribe a fat intake for a person.","Repeat health claims about oils that food authorities have not accepted.","Advise using oil that is rancid or has been heated past its smoke point for food.","Present one oil as a cure or a danger beyond the evidence."],"requiresHuman":["Any dietary change for a person with a heart or metabolic condition."]},"ethics":{"considerations":["Fat advice has swung with fashion and marketing, and people's health decisions follow it.","Oxidised fats degrade food quality and may harm health."],"affectedParties":["Consumers reading labels","People managing heart conditions","Food producers and retailers"]},"owners":{"steward":"Nobody owns the substances; food authorities set labelling and health claim rules.","roles":[],"masterSystems":["National food composition and labelling records"]},"relations":[{"target":"Q61476","type":"parent","note":"registry parent class"},{"target":"Q899851","type":"parent","note":"registry parent class"},{"target":"fatty acid","type":"related","note":"category"},{"target":"saturated fatty acid","type":"related","note":"class"},{"target":"omega-3 fatty acid","type":"related","note":"member"},{"target":"vegetable oils and fish","type":"related","note":"sources"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.unsaturated-fatty-acid","Wikidata: Q2250497 (https://www.wikidata.org/wiki/Q2250497)"]},"properties":{"applicability":"required","items":["Molar mass:  g/mol - Calculate from the molecular formula of the identified fatty acid because chain length and unsaturation vary across the class.","Melting temperature:  deg C - Measure by thermal analysis and report chemical identity, purity and geometric configuration.","Density:  g/cm3 - Measure mass per calibrated volume and report temperature, physical state and sample composition."]},"recognition":{"applicability":"required","items":["Structural representations show at least one carbon-carbon double or triple bond within the fatty acid chain.","Double-bond examples include monounsaturated and polyunsaturated fatty acids.","Omega numbering describes double-bond positions relative to the methyl end.","Saturated fatty acids have no carbon-carbon double or triple bonds within their chains.","Liquid oils at room temperature in most cases."]},"capabilities":{"applicability":"required","items":["classify fatty acids by double bonds","read fat labels","identify omega-3 and omega-6 sources","understand trans fat rules"]},"hazards":{"applicability":"required","items":["Rancidity through oxidation","Agents giving personal diet advice","Misleading health claims"]},"interfaces":{"applicability":"required","items":["EU trans fat limit regulation 2019/649","Nutrition labelling rules","National dietary guidelines"]},"context":{"applicability":"required","items":["Nutrition, food science and biology of cell membranes.","monounsaturated fatty acids","omega-3 fatty acids","omega-6 fatty acids","trans fatty acids","conjugated fatty acids"]}},"sources":[{"title":"Wikidata item Q2250497: unsaturated fatty acid","url":"https://www.wikidata.org/wiki/Q2250497","note":"identity and sense of the item"},{"title":"Wikipedia: Unsaturated fatty acid","url":"https://en.wikipedia.org/wiki/Unsaturated_fatty_acid","note":"general description of the item"}],"openQuestions":["Should omega-3 and omega-6 be separate entries?","How should dietary guidelines be localised?","How should trans fats be split off?"],"resources":{"spec":"/models/things/publications/thing-q2250497/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q2250497/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T09:48:35Z","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 2026-10-07T12:16:31+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}