At AltaBioscience, we provide various purity options ranging from unpurified to over 95% purity. Peptide synthesis may generate impurities alongside the desired peptide, such as truncated sequences, deletion sequences, incomplete deprotected sequences, racemised peptides or compounds from side reactions such as aspartimide formation or cysteine oxidation.
When ordering custom peptides, checking whether the requested peptide purity level will suit the intended research applications is important. Crude peptides, without any purification, such as those obtained from the Episcan scale, are suitable for screening studies where a large number of peptides are initially tested before undertaking further studies. Standard purification to 80%-95% is suitable for applications such as polyclonal antibody generation, in-vitro assays, and peptide blocking studies, whereas higher purity over 95% is usually required for NMR studies, X-ray crystallography, and enzyme and structural studies.
Our peptide chemists can recommend suitable purity levels for your application. Contact our experts or learn more about peptide purification and peptide analysis.