Product Description Zafirlukast Other Details Molecular Formula: C31H33N3O6S Molecular Weight: 575.68 CAS Number: 107753-78-6 Minimum Purity: 98% (HPLC) UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 10mg Leadtime:20 Days Sizes 2: 50mg Leadtime:20 Days Sizes 3: 0 Leadtime:0