Quality is a chain, not a badge.
Proof over promises. Every lot is characterized and documented before it reaches a researcher — and the documentation is what makes a result reproducible.
Synthesis
Small, controlled batches with source documentation.
HPLC purity
Reversed-phase HPLC quantifies purity (≥98%).
MS identity
Mass spectrometry confirms molecular identity.
Lot COA
A Certificate of Analysis is issued per lot.
Label & storage
Compliant labels; lyophilized, stored −20 °C.
Qualified fulfillment
Cold-chain handling to qualified researchers.
RP-HPLC purity
Reversed-phase HPLC quantifies purity to ≥98% (≥99% on select tripeptides), with chromatograms retained per lot.
Mass-spec identity
Molecular identity is confirmed by mass spectrometry against the expected monoisotopic / average mass.
Lot traceability
Unique lot numbers and retained reference samples link every vial to its synthesis batch and analytical data.
How to read a COA
A Certificate of Analysis should answer four questions: identity (is it the right molecule?), purity (how much else is in the vial?), batch (which lot is this?), and testing (how was it measured?). If a document is unclear, the material is unclear.
- Identity — confirmed by mass spectrometry against the expected mass.
- Purity — quantified by RP-HPLC, reported as a percentage.
- Batch — a unique lot number tying the vial to its data.
- Testing — the methods and dates behind the numbers.
Storage & handling
Lyophilized peptides are shipped with insulated packaging and gel packs. On receipt, store at −20 °C, desiccated and protected from light. Follow your institution's safety protocols for handling research chemicals.
What Helix will not claim
We describe chemical characteristics and research context only. We do not claim safety, efficacy, or suitability for any human or veterinary use, and we provide no dosing or administration guidance.