amiphenazole amiphenazole amiphenazole (daptazile) is a respiratory stimulant traditionally used as an antidote for barbiturate or opiate overdose, usually in combination with bemegride, as well as poisoning from other sedative drugs and treatment of respiratory failure from other causes. it was considered particularly useful as it could counteract the sedation and respiratory depression produced by morphine but with less effect on analgesia. it is still rarely used in medicine in some countries, although it has largely been replaced by more effective respiratory stimulants such as doxapram and specific opioid antagonists such as naloxone. amiphenazoleclinical dataatc codenonelegal statuslegal status au: s4 (prescription only) identifiers iupac name 5-phenyl-1,3-thiazole-2,4-diamine cas number490-55-1pubchem cid10275chemspider9855 yunii7zj8pwy0xdchemblchembl1514085comptox dashboard (epa)dtxsid7046388 echa infocard100.007.013 chemical and physical dataformulac9h9n3smolar mass191.25 g·mol−13d model (jsmol)interactive image smiles c1=cc=c(c=c1)c2=c(n=c(s2)n)n inchi inchi=1s/c9h9n3s/c10-8-7(13-9(11)12-8)6-4-2-1-3-5-6/h1-5h,10h2,(h2,11,12) ykey:upoyfzyfgwbukl-uhfffaoysa-n y (verify)