*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : TM6406500 CHEMICAL NAME : 4-Piperidinecarboxylic acid, 4-((1-oxopropyl)phenylamino)-1-(2-(2-thienyl)ethyl)-, methyl ester CAS REGISTRY NUMBER : 60771-38-2 BEILSTEIN REFERENCE NO. : 0458457 LAST UPDATED : 199612 DATA ITEMS CITED : 1 MOLECULAR FORMULA : C22-H28-N2-O3-S MOLECULAR WEIGHT : 400.58 SYNONYMS/TRADE NAMES : * Methyl 4-(N-(1-oxopropyl)-N-phenylamino)-1-(2-(2-thienyl)ethyl)-4-piperidinecar boxylate * R 31826 * Thiofentanil *** HEALTH HAZARD DATA *** ** ACUTE TOXICITY DATA ** TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intravenous SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 2800 ug/kg TOXIC EFFECTS : Behavioral - analgesia REFERENCE : ARZNAD Arzneimittel-Forschung. Drug Research. (Editio Cantor Verlag, Postfach 1255, W-7960 Aulendorf, Fed. Rep. Ger.) V.1- 1951- Volume(issue)/page/year: 26,1548,1976 *** END OF RECORD ***