23476-83-7 3,12-Bis(3-chloro-2-hydroxypropyl)-3,12-diaza-6,9-diazoniadispiro[5.2.5.2]hexadecane dichloride 3,12-Diaza-6,9-diazoniadispiro[5.2.5.2]hexadecane, 3,12-bis(3-chloro-2-hydroxypropyl)-, dichloride NSC166100 Prospidin Prospidine Prospidium Prospidium chloride