124841-06-1 4-Oxo-4-(1,3,4-thiadiazol-2-ylamino)butanoic acid 2-((4-chlorophenyl)sulfonyl)hydrazide BRN 4213260 Butanoic acid, 4-oxo-4-(1,3,4-thiadiazol-2-ylamino)-, 2-((4-chlorophenyl)sulfonyl)hydrazide