Quality
≥99% HPLC purity, batch-verifiable
Every batch follows a documented process of synthesis, purity quantification and molecular identification.
Per-batch verification process
SPPS synthesis
Solid-phase peptide synthesis using Fmoc chemistry and Wang or Rink-Amide resins depending on the application, executed by a manufacturing partner experienced with pharmacopeial standards.
Independent HPLC validation
Each batch is validated by HPLC-UV at 220 nm, reverse-phase C18 column and acetonitrile/water gradient. Acceptance criterion is ≥99% purity; batches out of spec are fully rejected.
ESI-MS confirmation
Mass spectrometry confirms molecular identity within a maximum tolerance of ±0.1 Da between measured and calculated mass.
| Parameter | Criterion | Method |
|---|---|---|
| Purity | ≥99.0% | HPLC-UV 220 nm |
| Molecular identity | ±0.1 Da | ESI-MS |
| Appearance | Amorphous powder | Visual inspection |
| Solubility | Clear solution | Visual post-reconstitution |
| Shelf life | ≥18 months | Fresh synthesis |
Verify your batch publicly
Every vial has a unique code. Look it up to review the analytical documentation available.
Go to the verifier →Frequently asked questions about quality
+What purity do Peptide Life peptides have?
≥99.0% purity verified by HPLC-UV at 220 nm. Batches not meeting the criterion are fully rejected.
+How do I verify batch authenticity?
Every vial carries a Peptide Life batch code. Enter it in the verifier to check identity, purity, molecular mass and available documentation.
+What does a COA include?
Product identification, batch, HPLC purity, chromatogram, mass-spectrometry identity and relevant analysis dates.