Product Description Ondansetron Other Details Molecular Formula: C18H19N3O Molecular Weight: 293.36 CAS Number: 99614-02-5 Minimum Purity: 98% (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: 10g Leadtime:20 Days