PEPTIQE Reference

Precision. Purity. Made for science.

Discover the PEPTIQE catalog See how it's tested
Featured catalog

Our most-referenced standards.

PEPTIQE gives your bench a voice

Why PEPTIQE
Find your focus

A peptide for every research protocol.

Form meets function

Built for accuracy, designed for every run.

Every lot is tested by reverse-phase HPLC and ESI-MS before it ships. Lyophilized under nitrogen, endotoxin-checked, and traceable to the vial — so your protocol is reproducible from the first experiment to the hundredth.

How it's tested
The Science

Every batch, independently verified.

HPLC purity, ESI-MS identity, endotoxin screen. Three instruments, one batch, one certificate — shipped with every order.

Certificate of Analysis
Batch PQ-24B-0417
mAU
Reverse-phase HPLC · Waters Symmetry C18 · gradient 10→95% MeCN · 214 nm detection
intensity
ESI-MS positive mode · Waters SQ Detector 2 · calibrated leucine enkephalin lock-spray
0.012 EU/mg
Method LAL kinetic chromogenic
Analyst A. Huang · QC-03
Result PASS · 42× below limit
Limulus Amebocyte Lysate · kinetic chromogenic · USP <85> compliant
Verified · 17 Apr 2026
Signed M. Alvaro, Ph.D. · QC Lead
0.00% Main product · HPLC-UV
  • HPLC purity
    Reverse-phase C18, UV-214 nm. Reports main peak area + named impurities ≥ 0.1%.
    ≥ 99%
  • ESI-MS identity
    Molecular ion + isotope envelope matched against calculated mass within 0.1 Da.
    Matched
  • Endotoxin · LAL
    Kinetic chromogenic assay to USP <85>. Below limit by ≥ 40× on current lots.
    < 0.05 EU/mg
  • Lot traceability
    Every vial carries a batch ID tied to synthesis, raw materials, and operator sign-off.
    End-to-end
Read the research-use policy

Purity you can verify.

HPLC analytical instrument in the PEPTIQE quality-control lab
99.4
verified by HPLC
Every lot is tested by reverse-phase chromatography and mass spec before it ships. No pooled samples, no estimates — one vial, one signed CoA.
In the research

Reviewed by the researchers who use it.

Featured

"Lot-to-lot consistency finally good enough to standardize our in vitro protocols."

Read the study →

"CoA turnaround and traceability make PEPTIQE our default vendor for reference standards."

Bench & Beyond · 2025

"Reference-grade standards cited in three independent metabolic studies last year."

Peer & Cite · 2025

"Every CoA matches the vial. PEPTIQE has become a fixture in our protocols."

Metabolic Research Quarterly · 2025