CM-2K,5K,10K.20K 英文简称：four arm (polyethylene glycol) Acid 分子量：2K,5K,10K.20K 规格：1g,5g 4Arm-PEG-Acid, 4Arm-PEG-COOH four arm (polyethylene glycol) Acid Synonym: four arm PEG COOH, four arm PEG-Acid,4ARM-PEG-Acid ProductStructure: ProductSpecifications: CatalogNumbers:PS4-CM-2K,5K,10K.20K. Appearance: White/off-whiteor pale-yellow solid, semi-solid or liquid depends on molecular weight. Solubility: 10mg/mL in water,chloroform, DMSO. Stability: 1Years at -20°C, Desiccate. MolecularWeight（PEG）:2K,5K,10K.20K. Reactivegroup:COOH Purity:> 95%. Handlingand Use: 4Arm-PEG-COOH is sensitive to light and temperature. Forbest use, material should always be kept in low temperature in dry condition. Avoid frequent thaw and freezing. For moreinformation about using this product, StorageConditions： 4Arm-PEG-COOH should bestored at -20℃.Desiccate. Materials may be handledunder inert gas for best stability. Re-testmaterial after 12 months. RelatedProducts: 4arm-PEG-DA,4arm-PEG-MAL 4arm-PEG-SH,4arm-PEG-NHS 4arm-PEG-N3,4arm-PEG-ACA Thisproduct is for research use only and is not intended for use in humans or fordiagnostic use.