Product Description But-3-yne-1-sulfonyl chloride Other Details Molecular Formula: C4H5ClO2S Molecular Weight: 152.6 CAS Number: 936644-39-2 Minimum Purity: 0.95 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 100mg Leadtime:65 Days Sizes 2: 1g Leadtime:65 Days Sizes 3: 5g Leadtime:65 Days