15620-54-9 2,3,5,6-Tetrahydro-4,6-dimethyl-2-(3-pyridyl)-4H-1,3,4-thiadiazine 4H-1,3,4-Thiadiazine, 2,3,5,6-tetrahydro-4,6-dimethyl-2-(3-pyridyl)- BRN 0980191