Product Description Thieno[2,3-b]pyrazine Other Details Molecular Formula: C6H4N2S Molecular Weight: 136.17 CAS Number: 56088-28-9 Minimum Purity: 0.95 UN Number: N/A Dangerous Goods Class: N/A Packing Group: N/A Storage Temperature: N/A Sizes 1: 250mg Leadtime:20 Days Sizes 2: 1g Leadtime:20 Days Sizes 3: 5g Leadtime:20 Days