1003-10-7 2(3H)-Thiophenone, dihydro- 2-Oxothiolane 2-THIOPHENONE, TETRAHYDRO- 4,5-Dihydro-3(2H)-thiophenone 4-Butyrothiolactone 4-Thiobutyrolactone 5-17-09-00012 (Beilstein Handbook Reference) BRN 0105273 Dihydro-2(3H)-thiophenone EINECS 213-700-8 NSC 54087 Tetrahydro-2-thiophenone Thiacyclopentan-2-one Thiolan-2-one gamma-Thiobutyrolactone