6-Amino-1,3-dimethyl-7H-pyrimido(4,5-b)(1,4)thiazine-2,4(1H,3H)-dione 65413-40-3 7H-Pyrimido(4,5-b)(1,4)thiazine-2,4(1H,3H)-dione, 6-amino-1,3-dimethyl- BRN 0527893