Product Description Clemastine fumarate Other Details Molecular Formula: C21H26ClNO.C4H4O4 Molecular Weight: 459.96 CAS Number: 14976-57-9 Minimum Purity: 98% (HPLC) UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 100mg Leadtime:20 Days Sizes 2: 250mg Leadtime:20 Days Sizes 3: 1g Leadtime:20 Days