OPX —
The Private Catalogue
A closed catalogue of research-grade peptides. Admitted by invitation. Every account reviewed by hand.
Three stages from synthesis to signature.
Each OPX product passes through a controlled pipeline — built around the principle that research integrity begins at the vial.
Solid-phase synthesis
Sequences are assembled amino-acid by amino-acid under inert atmosphere using Fmoc chemistry in a GMP-aligned facility.
Verification by HPLC & MS
Each batch is independently assayed. Chromatograms and mass spectra are published to the Certificate of Analysis on every vial.
Sterile lyophilisation
Product is lyophilised in borosilicate vials, crimped and sealed under an ISO-7 laminar-flow environment.
A considered library of peptides.
The full catalogue is visible to members. A selection is shown below — each compound is offered in a single, uniform presentation: a black-labelled 10 mL borosilicate vial, numbered and certified.
-
No. 000
BPC-157
Body Protection Compound — 5 mg lyophilised research peptide.
- Purity
- ≥98%
- Net Weight
- 5 mg
- CAS No.
- 137525-51-0
- Molecular Weight
- 1419.53 g/mol
- Presentation
- Lyophilised powder in sealed vial
$42.00Add to order → -
No. 000
TB-500
Thymosin Beta-4 fragment — 5 mg lyophilised research peptide.
- Purity
- ≥98%
- Net Weight
- 5 mg
- CAS No.
- 77591-33-4
- Molecular Weight
- 4963.44 g/mol
- Presentation
- Lyophilised powder in sealed vial
$56.00Add to order → -
No. 000
IPA
Ipamorelin — 5 mg lyophilised research peptide.
- Purity
- ≥98%
- Net Weight
- 5 mg
- CAS No.
- 170851-70-4
- Molecular Weight
- 711.85 g/mol
- Presentation
- Lyophilised powder in sealed vial
$38.00Add to order → -
No. 000
CJC-1295
CJC-1295 (No DAC) — 5 mg lyophilised research peptide.
- Purity
- ≥98%
- Net Weight
- 5 mg
- CAS No.
- 863288-34-0
- Molecular Weight
- 3367.97 g/mol
- Presentation
- Lyophilised powder in sealed vial
$44.00Add to order → -
No. 000
GHK-Cu
Copper Tripeptide-1 — 50 mg lyophilised research peptide.
- Purity
- ≥98%
- Net Weight
- 50 mg
- CAS No.
- 49557-75-7
- Molecular Weight
- 403.93 g/mol
- Presentation
- Lyophilised powder in sealed vial
$52.00Add to order → -
No. 000
SEMAX
Semax — 10 mg lyophilised research peptide.
- Purity
- ≥98%
- Net Weight
- 10 mg
- CAS No.
- 80714-61-0
- Molecular Weight
- 813.93 g/mol
- Presentation
- Lyophilised powder in sealed vial
$48.00Add to order → -
No. 000
EPT
Epithalon — 10 mg lyophilised research peptide.
- Purity
- ≥98%
- Net Weight
- 10 mg
- CAS No.
- 307297-39-8
- Molecular Weight
- 390.34 g/mol
- Presentation
- Lyophilised powder in sealed vial
$46.00Add to order → -
No. 000
TA-1
Thymosin Alpha-1 — 5 mg lyophilised research peptide.
- Purity
- ≥98%
- Net Weight
- 5 mg
- CAS No.
- 62304-98-7
- Molecular Weight
- 3108.29 g/mol
- Presentation
- Lyophilised powder in sealed vial
$62.00Add to order → -
No. 000
MT-II
Melanotan II — 10 mg lyophilised research peptide.
- Purity
- ≥98%
- Net Weight
- 10 mg
- CAS No.
- 121062-08-6
- Molecular Weight
- 1024.18 g/mol
- Presentation
- Lyophilised powder in sealed vial
$34.00Add to order →
Verified at every molecular step.
OPX operates under a published quality framework. Each lot is accompanied by a digital Certificate of Analysis containing HPLC chromatograms, mass-spec confirmation, sequence identity, peptide content and water content.
We audit our suppliers annually. OPX has cleared ours two years running without remediation.
Questions, candidly answered.
What does "research grade" mean?
Our peptides are sold exclusively for in-vitro laboratory research. They are not a medicine, are not intended for human or animal consumption, and are not intended to diagnose, treat, cure or prevent any condition.
How is purity verified?
Every batch is analysed by reverse-phase HPLC and confirmed by mass spectrometry. The resulting Certificate of Analysis is matched to the batch number printed on the vial and downloadable from your account.
How should I store OPX vials?
Unreconstituted lyophilised peptide is stored at −20 °C, protected from light. Once reconstituted with bacteriostatic water, vials should be refrigerated at 2–8 °C and used within a short research window appropriate to the compound.
Where does OPX ship?
We ship temperature-controlled parcels within the United Kingdom and European Union. Shipments leave our facility on Tuesdays and Thursdays with fully tracked next-day delivery.
How do I join OPX?
Access to OPX is by invitation. Most members arrive through referral by an existing account holder; a smaller number are admitted after a direct application and credential review. We do not operate a public checkout.
A private list. By invitation.
If you've been referred — or believe your laboratory qualifies — submit a short application and we will respond within five working days.