AZA04H: Acetazolamide EP Impurity D

Acetazolamide USP RC D ; 

5-Amino-1,3,4-thiadiazole-2-sulfonamide HCl ;

CAS # 120208-98-2 (HCl) ; 14949-00-9 (Base) ;

C2H5ClN4O2S2 ;
Mol. Wt.: 216.67 ;