Description: Mol Wt 20,000 Da Form: Powder CAS Number : 25988-63-0Application : Poly-L-lysine polymers can be used in promoting cell adhesion to solid substrates, conjugation to methotrexate for increased drug transport, microencapsulation of islets, cell microencapsulation technology, microarray glass slide coating, and chromosomal preparations. Lower molecular weight poly-L-lysine is less viscuous in solution, but higher molecular weight versions provide more attachment sites per molecule.Storage/Stability : Shipped at 4°C. Store at -20°C for 2 years.