2-hydrazino-4(H)-1,3,4-thiadiazino<5,6-b>quinoxaline

2-(N-DL-Ala)-hydrazino-4H-1,3,4-thiadiazino<5,6-b>quinoxaline

2-(Gly)hydrazino-4H-1,3,4-thiadiazino<5,6-b>quinoxaline

2-(N-Tos-L-Ser-Gly-L-Ala)hydrazino-4H-1,3,4-thiadiazino<5,6-b>quinoxaline

2-(N-Tos-L-Ser-Gly-Gly)hydrazino-4H-1,3,4-thiadiazino<5,6-b>quinoxaline

5H-tetrazolo[5',1':2,3][1,3,4]thiadiazino[5,6-b]quinoxaline

(S)-3-Hydroxy-N-[N'-(1H-4-thia-1,2,9,10-tetraaza-anthracen-3-yl)-hydrazinocarbonylmethyl]-2-(toluene-4-sulfonylamino)-propionamide

4-Methyl-N-{1-[N'-(1H-4-thia-1,2,9,10-tetraaza-anthracen-3-yl)-hydrazinocarbonyl]-ethyl}-benzenesulfonamide