Fluorescein-PEG-acid，FITC-PEG-COOH Fluorescein (polyethylene glycol) Carboxylic acid Synonym: Fluorescein PEG COOH, Carboxylic PEG Fluorescein, FITC PEG COOH Product Structure: Product Specifications: l  Catalog Numbers:PS2-CMFT-1K,2K,3.4K,5K,10K. l  Appearance: Orange/yellow solid. l  Solubility: 10 mg/mL in water,chloroform, DMSO. l  Stability: 1 Years at -20°C, Desiccate. l  Molecular Weight（PEG）: 1K,2K,3.4K,5K,10K. l  Reactive group: COOH. l  Ex/Em wavelength: 490 nm/520 nm.   Handling and Use: FITC-PEG-COOH  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： FITC-PEG-COOH should be stored at -20℃. Desiccate.  Materials may be handled under inert gas for best stability. Re-test material after 12 months.   Related Products: Silane-PEG-COOH, DSPE-PEG-COOH NH2-PEG-COOH ,FA-PEG-COOH NHS-PEG-COOH,HS-PEG-COOH This product is for research use only and is not intended for use in humans or for diagnostic use.