1-Phthalazinecarboxylic acid, 3,4-dihydro-4-oxo-3-(phenylmethyl)-
1-Phthalazinecarboxylic acid, 3-benzyl-3,4-dihydro-4-oxo-
3,4-Dihydro-4-oxo-3-(phenylmethyl)-1-phthalazinecarboxylic acid
3-Benzyl-4-oxo-3,4-dihydro-phthalazine-1-carboxylic acid
3-Benzyl-4-oxo-3,4-dihydrophthalazine-1-carboxylic acid