99056-35-6

ETHYL 7-METHYL-1H-PYRAZOLO(1,5-A)PYRIMIDIN-4-OXO-3-CARBOXYLATE ethyl 2-methyl-7-oxo-4H,7H-pyrazolo[1,5-a]pyrimidine-6-carboxylate ETHYL 2-METHYL-7-OXO-4,7-DIHYDROPYRAZOLO[1,5-A]PYRIMIDINE-6-CARBOXYLATE ethyl 4,7-dihydro-2-methyl-7-oxopyrazolo[1,5-a]pyrimidine-6-carboxylate 2-methyl-7-oxo-1H-pyrazolo[1,5-a]pyrimidine-6-carboxylic acid ethyl ester