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Assessing the Oxidation of Biopharmaceutical Compounds by Reversed-Phase Chromatography (RP-HPLC / RP-UPLC) (CAT#: STEM-B-0409-CJ)

Introduction

All biopharmaceutical compounds are sensitive towards chemical degradation. Examples are deamidation, hydrolysis, oxidation, photo-degradation, disulfide-scrambling, and others. Chemical degradation can lead to aggregation, charge variants and/or structural changes of the drug substance and eventually impair the effectivity or safety of the therapy.




Principle

Reversed-phase chromatography on high-performance liquid chromatography (HPLC) instruments coupled with UV-, fluorescence-, refractive index- and/or multi-angle laser light scattering (MALLS) detection. Further, ultra-high-performance chromatography (UPLC) instruments with UV detection are available, reducing analysis times, requiring lower sample and mobile phase volumes and delivering better resolution.

Applications

Biopharmaceutica

Procedure

1. Sample preparation.
2. Binding an organic molecule to a stationary phase,
3. The hydrophobic binding of the solute molecule from the mobile phase to the immobilized hydrophobic ligands attached to the stationary phase, i.e., the sorbent.
4. Eluting the organic molecule using a gradient of a less polar organic solvent: Elution can proceed either by isocratic conditions where the concentration of organic solvent is constant, or by gradient elution whereby the amount of organic solvent is increased over a period of time.

Materials

• Sample: Peptides, Proteins, Vaccines, Virus-like particles
• Equipment: HPLC & UHPLC Columns
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