4-amino-3-hydrazino-5-mercapto-1 2 4-triazole July 8, 2019 16 32 64 128 4-amino-3-hydrazino-5-mercapto-1 2 4-triazol 3-amino-5-mercapto-1 2 4-triazole 2-amino-5-mercapto-1 3 4-thiadiazole
