Product Description Pentacene Other Details Molecular Formula: C22H14 Molecular Weight: 278.35 CAS Number: 135-48-8 Minimum Purity: 0.98 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 25mg Leadtime:20 Days Sizes 2: 100mg Leadtime:20 Days Sizes 3: 250mg Leadtime:20 Days