Cluster 02
Orthogonal method coverage: chromatographic purity, molecular identity confirmation, and the contaminant classes that a purity percentage alone never reports.
Technical Guide
A technical guide to reading research peptide analytical data: RP-HPLC purity, LC-MS identity confirmation, USP <61>/<62>/<71> microbial standards, GC-MS residual solvents, and ICP-OES elemental impurity screening.
Technical Guide
Research peptides are peptide materials supplied for laboratory research rather than clinical use. This technical guide explains peptide identity, purity, peptide content, impurities, analytical testing, and how to read a lot-specific Certificate of Analysis.
Research
HPLC purity is only one dimension of a research compound's true quality. Understanding what a 99% number does — and doesn't — represent is essential for reproducible science.
Research
This review examines how acetate and trifluoroacetate (TFA) salt forms can influence peptide stability, analytical characterization, reconstitution properties, and assay behavior. It also explains why salt form alone cannot predict shelf-life and why peptide-specific stability data, counterion analysis, moisture content, and formulation conditions should guide research decisions.
Peptide Science
A technical review of formulation compatibility and peptide stability under acidic conditions: pH-driven degradation pathways, chelation effects on copper peptides, and the RP-HPLC and LC-MS methods used to verify compatibility in vitro.
Technical Guide
Learn how to evaluate a peptide Certificate of Analysis by checking batch traceability, RP-HPLC purity, mass-spectrometry identity, peptide content, water, counterions, and supporting data.
Analytical Guide
Learn what a 99% peptide purity result means, how RP-HPLC area purity is calculated, and why purity, identity, and peptide content require separate evidence.
Analytical Guide
Understand how HPLC purity, LC-MS identity evidence, and quantitative peptide content answer different analytical questions.
Analytical Guide
A researcher's guide to sequence variants, oxidation, stereochemical impurities, co-elution, and the complementary methods used to investigate them.
Planned additions to this cluster. Contact our team if you need any of this documentation ahead of publication.
Gradient design, detection wavelength, resolution and system suitability, and how related substances are integrated and reported.
GC headspace residual solvent screening, ICP-OES/ICP-MS elemental impurities, and Karl Fischer or loss-on-drying water content.
Bioburden enumeration, specified microorganism testing, and how microbial attributes are reported on research-use documentation.
Why net peptide content, counterion mass, and water content change the actual amount of peptide weighed into an assay.
