thiomorpholine parathiazan InChI=1/C4H9NS/c1-3-6-4-2-5-1/h5H,1-4H 1-thia-4-azacyclohexane 1,4-Thiazan EINECS 204-660-2 196274_ALDRICH Tetrahydro-2H-1,4-thiazine Thiamorpholine Thiazolidinane 1,4-thiazane tetrahydro-1,4-thiazine CHEBI:36392