Product Description Cryptotanshinone Other Details Molecular Formula: C19H20O3 Molecular Weight: 296.36 CAS Number: 35825-57-1 Minimum Purity: 98+% UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 5mg Leadtime:20 Days Sizes 2: 10mg Leadtime:20 Days Sizes 3: 50mg Leadtime:20 Days