73664-59-2 8-[2-(p-Methoxybenzylidene)hydrazino]theophylline Benzaldehyde, 4-methoxy-, (2,3,6,7-tetrahydro-1,3-dimethyl-2,6-dioxo-1H-purin-8-yl)hydrazone Benzaldehyde, p-methoxy-, (1,3-dimethyl-8-xanthinyl)hydrazone NSC64671 Theophylline, 8-[2-(p-methoxybenzylidene)hydrazino]- p-Methoxybenzaldehyde (1,3-dimethyl-8-xanthinyl)hydrazone