134575-05-6

Ethyl 5-benzyl-4,6-dioxo-1H,3aH,6aH-pyrrolo[3,4-c]pyrazole-3-carboxylate ethyl 5-benzyl-4,6-dioxo-1,3a,4,5,6,6a-hexahydropyrrolo[3,4-c]pyrazole-3-carboxylate ethyl 5-benzyl-1,3a,4,5,6,6a-hexahydro-4,6-dioxopyrrolo[3,4-c]pyrazole-3-carboxylate Pyrrolo[3,4-c]pyrazole-3-carboxylic acid, 1,3a,4,5,6,6a-hexahydro-4,6-dioxo-5-(phenylmethyl)-, ethyl ester