p. 757 - 758
(1969)p. 1225 - 1227
(2007/10/02)phenylhydrazine
dimethyl acetylenedicarboxylate
Dimethyl 2-oxosuccinate
phenylhydrazine acetate
5-oxo-1-phenyl-2,5-dihydro-1H-pyrazole-3-carboxylic acid
N-Phenyl-3-carbomethoxy-5-methoxypyrazole
5-methoxy-1-phenyl-1H-pyrazole-3-carboxylic acid
Methyl 5-methoxy-N-phenylpyrazole-3-carboxylate
5-oxo-1-phenyl-2,5-dihydro-1H-pyrazole-3-carboxylic acid methyl ester