2-Mercapto-5-methyl-1,3,4-thiadiazole29490-19-5100 % similar 2,5-Dimercapto-1,3,4-thiadiazole1072-71-567 % similar 2,5-Dimethyl-1,3,4-thiadiazole27464-82-058 % similar 5-Methylthio-1,3,4-thiadiazole-2-thiol6264-40-044 % similar 2-Acetylamino-5-mercapto-1,3,4-thiadiazole32873-56-638 % similar 4-Methyl-2(3H)-thiazolethione4498-39-932 % similar