二氢-2H-硫代吡喃-3(4h)-酮

3,3-diethoxytetrahydro-2H-thiopyran 1,1-dioxide

3-oxo-thiane-1-oxide

sodium methoxy-(3-oxo-tetrahydrothiopyran-2-ylidene)methanolate

4-methylthio-butyric acid