2-Oxa-9-azaspiro[5.5]undecane

3,9-Bis(2,4-di-tert-butylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane

2-Oxa-9-azaspiro[5.5]undecane hydrochloride

3-Methyl-3,9-diazaspiro[5.5]undecane

2,2',7,7'-Tetrabromo-9,9'-spirobifluorene

3,9-Diazaspiro[5.5]undecan-2-one

tert-Butyl 2,9-diazaspiro[5.5]undecane-9-carboxylate hydrochloride

tert-Butyl 3-hydroxy-1-oxa-8-azaspiro[4.5]decane-8-carboxylate

4-(4-Chlorophenyl)-2-isopropyl-2,8-diazaspiro[4.5]decan-1-one hydrochloride

tert-Butyl 1,6-diazaspiro[3.4]octane-6-carboxylate oxalate(2:1)