Product Description Allopurinol EP Impurity A Other Details Molecular Formula: C4H6N4O Molecular Weight: 126.12 CAS Number: 5334-31-6 Minimum Purity: 98% (HPLC) UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 100mg Leadtime:20 Days Sizes 2: 1g Leadtime:20 Days Sizes 3: 0 Leadtime:0