1-Oxa-3,8-diazaspiro(4,5)decan-2-one, 8-(2-phenylethyl)- (9CI) 1-Oxa-3,8-diazaspiro(4.5)decan-2-one, 8-phenethyl- 5053-06-5 BRN 0533332 EINECS 225-751-3 FENSPIRIDE Fenspirida [INN-Spanish] Fenspiridum [INN-Latin] Respiride Viarespan