73664-59-2 8-(2-(p-Methoxybenzylidene)hydrazino)theophylline BENZALDEHYDE, p-METHOXY-, (1,3-DIMETHYL-8-XANTHINYL)HYDRAZONE Benzaldehyde, 4-methoxy-, (2,3,6,7-tetrahydro-1,3-dimethyl-2,6-dioxo-1H-purin-8-yl)hydrazone (9CI) NSC 64671 Theophylline, 8-(2-(p-methoxybenzylidene)hydrazino)- p-Methoxybenzaldehyde (1,3-dimethyl-8-xanthinyl)hydrazone