1-Oxa-8-azaspiro(4.5)decane hydrochloride3970-79-430 % similar 1,4-Oxazepane hydrochloride178312-62-430 % similar Spermidine trihydrochloride334-50-930 % similar 3,3-Difluorocyclobutanamine hydrochloride637031-93-730 % similar