1199-03-7 2,3-Dimercaptoquinoxaline 2,3-Dithiolquinoxaline 2,3-QUINOXALINEDITHIOL 2,3-Quinoxalinedithione, 1,4-dihydro- 2,3-Quinoxalinethiol 40158-04-1 EINECS 214-841-8 NSC 56344 NSC 63917 NSC 9434 QDT Quinoxaline-2,3-dithiol USAF EK-7317