Product Description Rifaximin Other Details Molecular Formula: C43H51N3O11 Molecular Weight: 785.88 CAS Number: 80621-81-4 Minimum Purity: 97% (HPLC) UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 1g Leadtime:20 Days Sizes 2: 5g Leadtime:20 Days Sizes 3: 0 Leadtime:0