Product Description Hygromycin B hydrate Other Details Molecular Formula: C20H37N3O13.H2O Molecular Weight: 545.54 CAS Number: 31282-04-9 Minimum Purity: 0 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 200mg Leadtime:20 Days Sizes 2: 1g Leadtime:20 Days Sizes 3: 0 Leadtime:0