{"Aliases":["Acetyl fentanyl","N-(1-phenethylpiperidin-4-yl)-N-phenylacetamide","Acetamide, N-phenyl-N-[1-(2-phenylethyl)-4-piperidinyl]-","Piperidine, 1-phenethyl-4-(N-phenylacetamido)-","N-Phenyl-N-(1-(2-phenylethyl)piperidin-4-yl)acetamide","J125.906G","Acetamide, N-phenyl-N-(1-(2-phenylethyl)-4-piperidinyl)-","Dtxcid90108766","N-(1-Phenethyl-piperidin-4-yl)-N-phenyl-acetamide","Acetanilide, N-(1-phenethyl-4-piperidyl)-","Chebi:233556","Acetyl Fentanyl","Acetyl fentanyl-13C6","Fentanyl impurity C","desmethyl fentanyl","Fentanyl specified impurity C","N-Phenyl-N-[1-(2-phenylethyl)-4-piperidinyl]acetamide","N-(1-phenethyl-4-piperidyl)acetanilide","1-Phenethyl-4-(N-phenylacetamido)piperidine","Epitope ID:2278194","Schembl684578","DEA No. 9821","BDBM641070","Akos025149437","AS-38221","Fentanyl impurity c","US20230399418, Compound Acetylfentanyl","NS00067966","C22756","Fentanyl citrate impurity c","(N-(1-Phenethylpiperidin-4-yl)-N-phenylacetamide)","1-(2-phenylethyl)-4-(N-acetylphenylamino)piperidine","N-Phenyl-N-[1-(2-phenylethyl)-4-piperidinyl]acetamide #"],"CAS":"3258-84-2","ChemicalClasses":["phenethylpiperidine"],"Chirality":"achiral","Classes":["Opioid"],"DTXSID":"80186275","EliminationHalfLife":"","Erowid Experience Reports":[{"Author":"TaUrz","Id":106838,"Title":"First Time Out"},{"Author":"Drewpy","Id":107574,"Title":"Not Impressed"},{"Author":"Matty","Id":102018,"Title":"100% Pain Relief"},{"Author":"Q","Id":106907,"Title":"Tested the Waters a Lot"},{"Author":"Eyeamffd","Id":107307,"Title":"I Realized I Was Becoming Addicted"}],"Esters":[],"European Community (EC) Number":"642-159-4","Formating":[],"HMDB ID":"HMDB0246153","HeavyAtomCount":24,"IUPACName":"N-phenyl-N-[1-(2-phenylethyl)piperidin-4-yl]acetamide","InChI":"InChI=1S/C21H26N2O/c1-18(24)23(20-10-6-3-7-11-20)21-13-16-22(17-14-21)15-12-19-8-4-2-5-9-19/h2-11,21H,12-17H2,1H3","InChIKey":"FYIUUQUPOKIKNI-UHFFFAOYSA-N","MeSH Headers":[{"Id":"M000601886","Link":"https://id.nlm.nih.gov/mesh/M000601886.html","Name":"N-(1-phenethylpiperidin-4-yl)-N-phenylacetamide","Ref":26},{"Id":"DescTree","Link":"https://www.nlm.nih.gov/mesh/meshhome.html","Name":"MeSH Tree","Ref":28},{"Id":"PubMed from MeSH","Link":"https://www.nlm.nih.gov/mesh/meshhome.html","Name":null,"Ref":40}],"MolecularFormula":"C\u003csub\u003e21\u003c/sub\u003eH\u003csub\u003e26\u003c/sub\u003eN\u003csub\u003e2\u003c/sub\u003eO","MolecularWeight":"322.4 g/mol","PubChemId":527015,"PubChemTitle":"Acetylfentanyl","Reagents":[{"Colors":["#ffffff","#fd7322"],"Name":"Marquis"},{"Colors":["#ffffff","#f0d41d"],"Name":"Mecke"},{"Colors":["#f0d41d","rgba(0,103,206,1)"],"Name":"Mandelin"}],"Record Description":["Wikipedia|List of designer drugs|Sedatives|Opioids","WIKIPEDIA|FENTANYL ANALOGUES","Acetylfentanyl was discovered at the same time as fentanyl itself and had only rarely been encountered on the illicit market in the late 1980s. However, in 2013, Canadian police seized 3 kilograms of acetylfentanyl. As a \u0026#956;-opioid receptor agonist, acetylfentanyl may serve as a direct substitute for heroin or other opioids. Side effects of fentanyl analogs are similar to those of fentanyl itself, which include itching, nausea and potentially serious respiratory depression, which can be life-threatening."],"Records":{"UNII":{"Impurities":[]}},"RefChem":"109151","RefCount":4,"RefCur":"","References":[{"Name":"Wikipedia","Urls":[{"Link":"https://en.wikipedia.org/wiki/Acetylfentanyl","Name":"Acetylfentanyl","Sub":false}]},{"Name":"Wikidata","Urls":[{"Link":"https://www.wikidata.org/wiki/Q15408427","Name":"Acetylfentanyl","Sub":false}]},{"Name":"PubChem","Urls":[{"Link":"https://pubchem.ncbi.nlm.nih.gov/compound/527015","Name":"Acetylfentanyl","Sub":false}]},{"Name":"Common Chemistry","Urls":[{"Link":"https://commonchemistry.cas.org/detail?cas_rn=3258-84-2","Name":"Acetylfentanyl","Sub":false}]},{"Name":"HMDB","Urls":[{"Link":"https://hmdb.ca/metabolites/HMDB0246153","Name":"Acetylfentanyl","Sub":false}]},{"Name":"KEGG","Urls":[{"Link":"https://www.kegg.jp/entry/C22756","Name":"Acetylfentanyl","Sub":false}]},{"Name":"UNII","Urls":[{"Link":"https://gsrs.ncats.nih.gov/ginas/app/ui/substances/6DZ28538KS","Name":"Acetylfentanyl","Sub":false}]},{"Name":"EPA DSSTox","Urls":[{"Link":"https://comptox.epa.gov/dashboard/chemical/details/DTXSID80186275","Name":"Acetylfentanyl","Sub":false}]}],"Refs":["National Center for Biotechnology Information. PubChem Compound Summary for CID 527015, Acetylfentanyl. Accessed May 24, 2026. \u003ca href=https://pubchem.ncbi.nlm.nih.gov/compound/527015\u003ehttps://pubchem.ncbi.nlm.nih.gov/compound/527015\u003c/a\u003e","U.S. Food and Drug Administration; National Center for Advancing Translational Sciences. Acetylfentanyl. UNII: 6DZ28538KS. Global Substance Registration System. Accessed May 24, 2026. \u003ca href=https://gsrs.ncats.nih.gov/ginas/app/beta/substances/6DZ28538KS\u003ehttps://gsrs.ncats.nih.gov/ginas/app/beta/substances/6DZ28538KS\u003c/a\u003e","Controlled Drugs and Substances Act. Accessed May 24, 2026. \u003ca href=https://isomerdesign.com/Cdsa/schedule.php?schedule=1\u0026section=16\u0026structure=C\u003ehttps://isomerdesign.com/Cdsa/schedule.php?schedule=1\u0026section=16\u0026structure=C\u003c/a\u003e"],"SMILES":"CC(=O)N(C1CCN(CC1)CCC2=CC=CC=C2)C3=CC=CC=C3","SaltData":[{"AcidCount":1,"Amine":"Acetylfentanyl","AmineCount":1,"Formula":"Cl","Name":"hydrochloride","RName":"hydrochloride","Structure":"\u003csvg xmlns=\"http://www.w3.org/2000/svg\" preserveAspectRatio=\"none\" style=\"display:block\" viewBox=\"0 0 156.972 101.145\"\u003e\u003crect width=\"100%\" height=\"100%\" fill=\"#fff\"/\u003e\u003cdesc\u003eGenerated by the Chemistry Development Kit (http://github.com/cdk)\u003c/desc\u003e\u003cg fill=\"#1ff01f\" stroke=\"#000\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\".7\"\u003e\u003cpath fill=\"#fff\" stroke=\"none\" d=\"M0 0h157v102H0z\"/\u003e\u003cg class=\"mol\"\u003e\u003cpath d=\"m133.025 46.758-13.198 7.62\" 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