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G., Zac-Varghese, S
rat, mouse, pig, human, etc
An industrial method for producing a pure peptide or GLP-1 peptide, the method including a cation exchange chromatography process for purifying a peptide from a mixture comprising said peptide or GLP-1 peptide and related impurities, comprising the steps of: separating said peptide or GLP-1 peptide and said related impurities of said mixture by elution in a solution comprising an organic modifier, water, optionally a salt component, and optionally a buffer, with a linear or step gradient or isocratically in salt component and/or with a linear or step pH-gradient or at a constant pH-value, wherein the pH-gradient or pH-value should be in the range where said peptide or GLP-1 peptide has a positive local or overall net charge different from the local or overall positive net charge of said related impurities so as to remove said related impurities
The overall effect will depend on individual circumstances
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