Product Description 1,3,7,8-Tetramethylxanthine Other Details Molecular Formula: C9H12N4O2 Molecular Weight: 208.22 CAS Number: 832-66-6 Minimum Purity: 0.95 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 250mg Leadtime:20 Days Sizes 2: 1g Leadtime:20 Days Sizes 3: 0 Leadtime:0