Product Description Fluorescein-PEG4-azide Other Details Molecular Formula: C31H33N5O9S Molecular Weight: 651.69 CAS Number: 1454662-54-4 Minimum Purity: 0.95 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 5mg Leadtime:20 Days Sizes 2: 25mg Leadtime:20 Days Sizes 3: 50mg Leadtime:20 Days