Product Description Cephalexin Other Details Molecular Formula: C16H17N3O4S Molecular Weight: 347.39 CAS Number: 15686-71-2 Minimum Purity: 98% (HPLC) UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 5g Leadtime:20 Days Sizes 2: 10g Leadtime:20 Days Sizes 3: 25g Leadtime:20 Days