Product Introduction：PEI 25K is a powerful, trusted, and cost-effective transient transfection reagent. In HEK293 and CHO expression systems, PEI offers consistently high gene expression on a wide scale (96 well plates up to 100 L bioreactors). Each year, more researchers and companies turn to Polysciences PEI to gain a critical edge in their work. Relative to most other options, using PEI to prepare transfection reagents in-house can offer as much as a 40% reduction in total transfection costs.

CAS Number：9002-98-6, 26913-06-4

Linear Formula：(CH2CH2NH)n

APPEARANCE：White to yellow solid

MELTING POINT：73-75o

MOLECULAR WEIGHT：25,000

SOLUBILITY：hot water, cold water at low pH, methanol, and ethanol.

INSOLUBLE IN：benzene, ethyl ether and acetone.