421565-92-6

Oprea1_805445 3-(4-ethoxyphenyl)-4-oxophthalazine-1-carboxylic acid 3-(4-ethoxyphenyl)-4-oxo-1-phthalazinecarboxylic acid 3-(4-ethoxyphenyl)-4-oxo-phthalazine-1-carboxylic acid 3-(4-ethoxyphenyl)-4-keto-phthalazine-1-carboxylic acid 3-(4-ethoxyphenyl)-4-oxo-3,4-dihydrophthalazine-1-carboxylic acid 1-Phthalazinecarboxylic acid, 3-(4-ethoxyphenyl)-3,4-dihydro-4-oxo-