tert-butyl 4-oxo-3H,4H,5H,6H,7H-pyrrolo[3,4-d]pyrimidine-6-carboxylate

tert-butyl 4-chloro-5H,6H,7H-pyrrolo[3,4-d]pyrimidine-6-carboxylate

tert-butyl 2,4-dichloro-5H,6H,7H-pyrrolo[3,4-d]pyrimidine-6-carboxylate

2-methoxy-6,7-dihydro-5H-pyrrolo[3,4-d]pyrimidine hydrochloride
