Product Description Vitamin D4 Other Details Molecular Formula: C28H46O Molecular Weight: 398.67 CAS Number: 511-28-4 Minimum Purity: 0.95 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 1mg Leadtime:20 Days Sizes 2: 0 Leadtime:0 Sizes 3: 0 Leadtime:0