Product Description HOOC-PEG4-COOH Other Details Molecular Formula: C14H26O9 Molecular Weight: 338.4 CAS Number: 439114-13-3 Minimum Purity: 0.95 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 100mg Leadtime:20 Days Sizes 2: 250mg Leadtime:20 Days Sizes 3: 1g Leadtime:20 Days