Product Description DL-Cysteine Other Details Molecular Formula: C3H7NO2S Molecular Weight: 121.16 CAS Number: 3374-22-9 Minimum Purity: 0.98 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 1g Leadtime:20 Days Sizes 2: 5g Leadtime:20 Days Sizes 3: 25g Leadtime:20 Days