Synonyms: 1,3,4-Thiadiazole-2-thiol,5-methyl-4-phenyl-, meso-ionic deriv. (7CI); 1,3,4-Thiadiazolium, 4,5-dihydro-2-methyl-3-phenyl-5-thioxo-,inner salt (9CI); 1,3,4-Thiadiazolium, 5-mercapto-2-methyl-3-phenyl-,hydroxide, inner salt (8CI);Anhydro-4-phenyl-5-methyl-2-thio-1-thia-3,4-diazolinium thiol;Anhydro-5-mercapto-3-phenyl-2-methylthiadiazolium hydroxide; NSC 122470; NSC293846; NSC 85790