2-Phenyl-4-tosyl-6-oxo-1,3-thiazine 6H-1,3-Thiazin-6-one, 4-hydroxy-2-phenyl-, p-toluenesulfonate 73672-86-3 BRN 5119711 p-Toluenesulfonic acid, 6-oxo-2-phenyl-6H-1,3-thiazin-4-yl ester