northiaden northiaden northiaden, also known as n-desmethyldosulepin, is the major active metabolite of the tricyclic antidepressant (tca) dosulepin (dothiepin; prothiaden). northiadenclinical dataother namesn-desmethyldosulepin; n-desmethyldothiepin; nordosulepin; nordothiepinidentifiers iupac name (3e)-3-(6h-benzobenzothiepin-11-ylidene)-n-methylpropan-1-amine cas number24881-71-8pubchem cid1715123chemspider1363695uniiz8w20xle56chemical and physical dataformulac18h19nsmolar mass281.42 g·mol−13d model (jsmol)interactive image smiles cncc/c=c/1\c2=cc=cc=c2csc3=cc=cc=c31 inchi inchi=1s/c18h19ns/c1-19-12-6-10-16-15-8-3-2-7-14(15)13-20-18-11-5-4-9-17(16)18/h2-5,7-11,19h,6,12-13h2,1h3/b16-10+key:ftelxjyvtofjai-mhwrwjlksa-n