mass spectrometry
4 articles tagged with ‘mass spectrometry’
Identity Is the Test Almost Nobody Runs
Rearrange TB-500's seven residues and there are 1,260 arrangements that all weigh exactly the same. Purity gets reported constantly and identity almost never, so here is what each method can and cannot establish about whether a vial holds the sequence on the label.
How to Verify Peptide Purity: HPLC, Mass Spectrometry, and Red Flags
A practical guide to interpreting HPLC chromatograms, mass spectrometry data, and Certificates of Analysis — with specific red flags that expose low-quality peptide suppliers before they compromise your research.
How to Read a Certificate of Analysis (COA): The Complete Guide for Peptide Researchers
A working guide to interpreting every section of a peptide Certificate of Analysis — from HPLC chromatograms and mass spec data to spotting the red flags that separate credible documentation from recycled paperwork.
Peptide Purity Standards: >99% HPLC Testing Explained
All peptide batches undergo independent testing to confirm >99% purity via HPLC and mass spectrometry before shipment. Third-party labs handle every analysis to ensure unbiased results, with failing batches rejected entirely. This process matches pharmaceutical standards used in clinical trials, providing verified quality for research compounds like BPC-157, GHK-Cu, and TB-500.