Product Description Biotin-PEG2-amine Other Details Molecular Formula: C16H30N4O4S Molecular Weight: 347.5 CAS Number: 138529-46-1 Minimum Purity: 0.98 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