A U.S. Patent of “Methods for Purification of Antibodies Using Aliphatic Alcohols” was awarded to Novartis on December 10th, 2019. The present invention is a method for isolating a protein from a cell culture supernatant, the method comprising: a) combining a cell culture supernatant with a divalent cation salt under conditions suitable for the precipitation of impurities in the supernatant to produce a primary supernatant; b) combining the primary supernatant with an aliphatic alcohol under conditions suitable for forming a protein-containing precipitate and isolating the protein-containing precipitate; c) re-suspending the protein-containing precipitate in a buffer… Learn More