Product Description Biotin-PEG3-azide Other Details Molecular Formula: C18H32N6O5S Molecular Weight: 444.55 CAS Number: 875770-34-6 Minimum Purity: 0.98 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 25mg Leadtime:20 Days Sizes 2: 100mg Leadtime:20 Days Sizes 3: 250mg Leadtime:20 Days