1246652-29-8

tert-butyl 3-aminospiro[1,4-dihydropyrrolo[3,4-c]pyrazole-6,1'-cyclobutane]-5-carboxylate tert-butyl 3'-amino-1'h-spiro[cyclobutane-1,6'-pyrrolo[3,4-c]pyrazole]-5'(4'h)-carboxylate tert-butyl 3'-amino-1',4'-dihydro-5'H-spiro[cyclobutane-1,6'-pyrrolo[3,4-c]pyrazole]-5'-carboxylate tert-butyl 3'-amino-4',5'-dihydro-1'H-spiro[cyclobutane-1,6'-pyrrolo[3,4-c]pyrazole]-5'-carboxylate Spiro[cyclobutane-1,6'(5'H)-pyrrolo[3,4-c]pyrazole]-5'-carboxylic acid, 3'-amino-1',4'-dihydro-, 1,1-dimethylethyl ester