4Arm-PEG-Amine, 4Arm-PEG-NH2  four arm (polyethylene glycol) amine Synonym: four arm  PEG amine, four arm PEG-NH2 Product Structure: Product Specifications: l  Catalog Numbers:PS4-N-2K,5K,10K.20K. l  Appearance: White/off-white solid, semi-solid or liquid depends on molecular weight. l  Solubility: 10 mg/mL in water,chloroform, DMSO. l  Stability: 2 Years at 2-8°C, Desiccate. l  Molecular Weight（PEG）:2K,5K,10K.20K. l  Reactive group: NH2. l  Reactive to: COOH,NHS. l  Purity: > 95%. Handling and Use: 4Arm-PEG-NH2  is sensitive to light and temperature. For best use, material should always be kept in low temperature in dry condition.  Avoid frequent thaw and freezing. For more information about using this product, . Storage Conditions： 4Arm-PEG-NH2 should be stored at 2-8℃. Desiccate.  Materials may be handled under inert gas for best stability. Re-test material after 24 months. Related Products: NH2-PEG-COOH, DSPE-PEG-NH2 NH2-PEG-SH ,FA-PEG-NH2 FITC-PEG-NH2,LA-PEG-NH2       This product is for research use only and is not intended for use in humans or for diagnostic use.