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In another broad aspect the present invention relates to an anion exchange chromatography process for purifying a peptide from a mixture comprising said peptide and related impurities, comprising the step of: separating said 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 has a negative local or overall net charge different from the local or overall negative net charge of said related impurities so as to remove said related impurities
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American Pharmacists Association
F., Soares, M
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