organic heterotetracyclic compound dextromethorphan InChI=1S/C18H25NO/c1-19-10-9-18-8-4-3-5-15(18)17(19)11-13-6-7-14(20-2)12-16(13)18/h6-7,12,15,17H,3-5,8-11H2,1-2H3/t15-,17+,18+/m0/s1 Wikipedia:Dextromethorphan An organic heterotetracyclic compound that is morphinan substituted by a methoxy group at position 3 and a methyl group at position 7. It is used as an antitussive drug for suppressing cough. PMID:18198471 d-Methorphan 271.39724 KEGG:D03742 HMDB:HMDB01920 http://purl.obolibrary.org/obo/chebi.owl 0 MKXZASYAUGDDCJ-CGTJXYLNSA-N Dextromethorphan chebi_ontology C18H25NO CHEBI:4470 delta-Methorphan CAS:125-71-3 DXM [H][C@@]12CCCC[C@@]11CCN(C)[C@@H]2Cc2ccc(OC)cc12 KEGG:C06947 DrugBank:DB00514 PMID:24269965 3-methoxy-17-methylmorphinan 271.194 Reaxys:88549 PMID:17461892