Product Description 9,9'-Spirobifluorene Other Details Molecular Formula: C25H16 Molecular Weight: 316.39 CAS Number: 159-66-0 Minimum Purity: 0.95 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 1g Leadtime:20 Days Sizes 2: 5g Leadtime:20 Days Sizes 3: 25g Leadtime:20 Days