Product Description Spirobicromane Other Details Molecular Formula: C21H24O4 Molecular Weight: 340.42 CAS Number: 3127-14-8 Minimum Purity: 0.95 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 5g Leadtime:20 Days Sizes 2: 0 Leadtime:0 Sizes 3: 0 Leadtime:0