The chemical Fenspiride hydrochloride has a designated molecular formula of C15H21ClN2O2 and a molecular weight of 296.795 g/mol. Synonyms may include: Chlorhydrate de phenethyl-8-oxa-1-diaza-3,8-spiro(4,5)decanone-2 [French], Decaspiride, EINECS 225-752-9, Espiran, 8-N-Fenetil-1-oxa-2-oxo-3,8-diazaspiro-(4,5)-decano cloridrato [Italian], Fluiden, JP 428, NAT-333, 1-Oxa-3,8-diazaspiro(4.5)decan-2-one, 8-(2-phenylethyl)- (ChemID).