Purity Percentage
Purity percentage represents the fraction of the total HPLC chromatographic area attributable to the target peptide peak. A purity of ≥98% means at least 98% of detected material is the intended compound, with ≤2% being synthesis-related impurities.
Common impurities include deletion sequences (missing one or more amino acids from the target sequence), truncated fragments (synthesis terminated prematurely), oxidized forms (particularly methionine and tryptophan residues), and deamidated products.
Purity percentage should not be confused with net peptide content — they measure different things. A peptide can be 99% pure but have only 75% net peptide content due to water, counter-ions, and residual solvents comprising the remaining mass.
All Healthy Aminos products are for research use only.
Related Products
Related Terms
HPLC
High-Performance Liquid Chromatography — the standard analytical technique for determining peptide purity by separating molecular species based on their chemical properties.
Net Peptide Content
The percentage of gross powder weight that is actual peptide, accounting for water, counter-ions, and residual solvents.
Chromatogram
A graphical output from HPLC analysis showing UV absorbance vs retention time, where peaks represent different molecular species in the sample.
Certificate of Analysis (COA)
A document issued by an analytical laboratory reporting the results of identity, purity, and safety testing performed on a specific batch of material.
Research Use Only
FOR RESEARCH USE ONLY. Products sold by Healthy Aminos are intended strictly for in-vitro research and laboratory use. Not for human or animal consumption. Not FDA approved. By purchasing from Healthy Aminos, the buyer acknowledges that these products are not intended to diagnose, treat, cure, or prevent any disease. All products are sold as reference standards and research chemicals only.