2,3-Dihydro-7-phenyl-5H-thiazolo(3,2-a)pyridin-5-one 1-oxide 5-Oxo-7-phenyl-2,3,5-trihydrothiazolo(3,2-a)pyridine-1-oxide 5H-Thiazolo(3,2-a)pyridin-5-one, 2,3-dihydro-7-phenyl-, 1-oxide 66066-58-8