Nonidet P-40
nonidet p-40
A poly(ether) macromolecule that is polyethylene glycol in which one of the terminal hydroxy groups has been converted to the corresponding <em>p</em>-octylphenyl ether. A nonionic, non-denaturing detergent, it is used for solubilising membrane proteins during isolation of membrane-protein complexes. n ≈ 8.