Product Description 2-Carboxy-thiophene-5-carboxaldehyde Other Details Molecular Formula: C6H4O3S Molecular Weight: 156.16 CAS Number: 4565-31-5 Minimum Purity: 0.95 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 250mg Leadtime:20 Days Sizes 2: 1g Leadtime:20 Days Sizes 3: 5g Leadtime:20 Days