英文同义词: | ETHYL 4-OXO-4H,5H-PYRAZOLOl1,5-A]PYRAZINE-2-CARBOXYLATE;Pyrazolo[1,5-a]pyrazine-2-carboxylic acid, 4,5-dihydro-4-oxo-, ethyl ester;Ethyl 4-Hydroxypyrazolo[1,5-a]pyrazine-2-carboxylate;ethyl 4-oxo-5H-pyrazolo[1,5-a]pyrazine-2-carboxylate;Ethyl 4-oxo-4,5-dihydropyrazolo[1,5-a]pyrazine-2-carboxylate |