19574-04-0 4-Pyridyldimethylthiadiazine maleate 4H-1,3,4-Thiadiazine, 5,6-dihydro-4,6-dimethyl-2-(4-pyridyl)-, maleate 5,6-Dihydro-4,6-dimethyl-2-(4-pyridyl)-4H-1,3,4-thiadiazine maleate