Product Description 3-(Methylsulfonamido)-2-thiophenecarboxylic acid Other Details Molecular Formula: C6H7NO4S2 Molecular Weight: 221.26 CAS Number: 132864-57-4 Minimum Purity: 0.98 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 250mg Leadtime:20 Days Sizes 2: 1g Leadtime:20 Days Sizes 3: 5g Leadtime:20 Days