Product Description Thieno[2,3-b]thiophene Other Details Molecular Formula: C6H4S2 Molecular Weight: 140.23 CAS Number: 250-84-0 Minimum Purity: 0.95 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 1g Leadtime:50 Days Sizes 2: 5g Leadtime:50 Days Sizes 3: 0 Leadtime:0