Product Description Sulfamethazine sodium salt Other Details Molecular Formula: C12H13N4NaO2S Molecular Weight: 300.31 CAS Number: 1981-58-4 Minimum Purity: >98% (HPLC) UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 25mg Leadtime:20 Days Sizes 2: 100mg Leadtime:20 Days Sizes 3: 1g Leadtime:20 Days