dimethyltubocurarinium chloride dimethyltubocurarinium chloride dimethyltubocurarinium chloride (inn; also known as metocurine chloride (usan) and dimethyltubocurarine chloride) is a non-depolarizing nicotinic acetylcholine receptor antagonist used as a muscle relaxant. dimethyltubocurarinium chlorideclinical dataother names(+)-o,o'-dimethyl-tubocurine dichlorideatc codem03aa04 (who) identifiers iupac name (1s,16r)-9,10,21,25-tetramethoxy-15,15,30,30-tetramethyl-7,23-dioxa-15,30-diazaheptacyclohexatriaconta-3,5,8(34),9,11,18(33),19,21,24,26,31,35-dodecaene-15,30-diium dichloride cas number33335-58-9 ypubchem cid71931drugbankdb00416 nchemspider64941unii15be4g33h2comptox dashboard (epa)dtxsid10954969 echa infocard100.046.768 chemical and physical dataformulac40h48cl2n2o6molar mass723.73 g·mol−13d model (jsmol) smiles c1(ccc2cc(c3cc21cc4ccc(cc4)oc5c6c(cc(c5oc)oc)cc(6cc7ccc(c(c7)o3)oc)(c)c)oc)c.. inchi inchi=1s/c40h48n2o6.2clh/c1-41(2)17-15-27-22-34(44-6)36-24-30(27)31(41)19-25-9-12-29(13-10-25)47-40-38-28(23-37(45-7)39(40)46-8)16-18-42(3,4)32(38)20-26-11-14-33(43-5)35(21-26)48-36;;/h9-14,21-24,31-32h,15-20h2,1-8h3;2*1h/q+2;;/p-2/t31-,32+;;/m0../s1key:irpsjvwfswazsz-oiusmdotsa-l ny (what is this?) (verify)