1-ETHYLOXYCARBONYL-5-BOC-3-AMINO-4,6-DIHYDRO-PYRROLO[3,4-C]PYRAZOLE

5-tert-butyl 1-ethyl 3-aMinopyrrolo[3,4-c]pyrazole-1,5(4H,6H)-dicarboxylate

5-Boc-3-Amino-4,6-dihydropyrrolo[3,4-c]pyrazole-1-carboxylic acid ethyl ester

5-tert-butyl 1-ethyl 3-aMino-1H,4H,5H,6H-pyrrolo[3,4-c]pyrazole-1,5-dicarboxylate

Ethyl 5-(tert-butoxycarbonyl)-3-amino-4,6-dihydropyrrolo[3,4-c]pyrazole-1-carboxylate

3-Amino-5-tert-butyloxycarbonyl-1-ethoxycarbonyl-4,6-dihydro-1H-pyrrolo[3,4-c]pyrazole