European Pharmacopoeia (EP) Reference Standard Synonym(s): Sulfamethazine; 4,6-Dimethylsulfadiazine; 4-Amino- N -(4,6-dimethyl-2-pyrimidinyl)benzenesulfonamide; Sulfadimethyldiazine; Sulfadimidine Empirical Formula: C12H14N4O2S Formula Weight: 278.33...