Product Description mPEG8-CH2COOH Other Details Molecular Formula: C19H38O11 Molecular Weight: 442.5 CAS Number: 102013-72-9 Minimum Purity: 0.95 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 50mg Leadtime:50 Days Sizes 2: 100mg Leadtime:50 Days Sizes 3: 250mg Leadtime:50 Days