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Research Peptides

Rigorous Quality Control

Our production is verified by HPLC-MS to confirm >99% purityeo.

Independently Tested

Every batch is verified by a third-party lab, with results posted on our website

Based in the USA

Peptides are domestically synthesized, backed by our knowledgeable US-based team

Research Use

Trusted supplier for in-vitro laboratory research

Best sellers

G3-R

Receptor Agonists

Dose

10,30MG

Purity

99.838%

Form

Lyophilized

Out of Stock
For Research Use Only

G2-T

Receptor Agonists

Dose

10,30MG

Purity

99.838%

Form

Lyophilized

View Options · $75.00
For Research Use Only

G1-S / C-Amylin Blend

Receptor Agonists

Dose

5/5MG

Purity

99.838%

Form

Lyophilized

View Options · $130.00
For Research Use Only

G1-S

Receptor Agonists

Dose

5, 10MG

Purity

99.838%

Form

Lyophilized

View Options · $55.00
For Research Use Only

C-Amylin

Receptor Agonists

Dose

5MG

Purity

99.838%

Form

Lyophilized

View Options · $80.00
For Research Use Only

IGF1-LR3

Receptor Agonists

Dose

1MG

Purity

99.838%

Form

Lyophilized

View Options · $85.00
For Research Use Only

Thymosin Alpha-1

Receptor Agonists

Dose

10MG

Purity

99.838%

Form

Lyophilized

View Options · $85.00
For Research Use Only

Bacteriostatic Water

Receptor Agonists

Dose

Purity

99.838%

Form

Lyophilized

View Options · $8.00
For Research Use Only

Tirzepatide

Receptor Agonists

Dose

10, 30MG

Purity

99.838%

Form

Lyophilized

View Options · $1.00
For Research Use Only

Tesamorelin

Receptor Agonists

Dose

10MG

Purity

99.838%

Form

Lyophilized

View Options · $85.00
For Research Use Only

TB500 Blend

Receptor Agonists

Dose

5/5, 10/10MG

Purity

99.838%

Form

Lyophilized

View Options · $80.00
For Research Use Only

TB-500

Receptor Agonists

Dose

10MG

Purity

99.838%

Form

Lyophilized

View Options · $80.00
For Research Use Only

Sermorelin

Receptor Agonists

Dose

5MG

Purity

99.838%

Form

Lyophilized

View Options · $55.00
For Research Use Only

Semax

Receptor Agonists

Dose

30MG

Purity

99.838%

Form

Lyophilized

View Options · $60.00
For Research Use Only

Semaglutide

Receptor Agonists

Dose

5, 10MG

Purity

99.838%

Form

Lyophilized

View Options · $28.00
For Research Use Only

Selank

Receptor Agonists

Dose

5MG

Purity

99.838%

Form

Lyophilized

View Options · $45.00
For Research Use Only

Retatrutide

Receptor Agonists

Dose

10, 30MG

Purity

99.838%

Form

Lyophilized

View Options · $90.00
For Research Use Only

PT-141

Receptor Agonists

Dose

10MG

Purity

99.838%

Form

Lyophilized

View Options · $50.00
For Research Use Only

Oxytocin

Receptor Agonists

Dose

5MG

Purity

99.838%

Form

Lyophilized

View Options · $26.00
For Research Use Only

NAD+

Receptor Agonists

Dose

500MG

Purity

99.838%

Form

Lyophilized

View Options · $70.00
For Research Use Only

MOTS-C

Receptor Agonists

Dose

10MG

Purity

99.838%

Form

Lyophilized

View Options · $60.00
For Research Use Only

Melanotan-II

Receptor Agonists

Dose

10MG

Purity

99.838%

Form

Lyophilized

View Options · $45.00
For Research Use Only

KPV

Receptor Agonists

Dose

10MG

Purity

99.838%

Form

Lyophilized

View Options · $25.00
For Research Use Only

KLOW

Receptor Agonists

Dose

80MG

Purity

99.838%

Form

Lyophilized

View Options · $110.00
For Research Use Only

Ipamorelin

Receptor Agonists

Dose

5MG

Purity

99.838%

Form

Lyophilized

View Options · $40.00
For Research Use Only

GLOW

Receptor Agonists

Dose

70MG

Purity

99.838%

Form

Lyophilized

View Options · $105.00
For Research Use Only

GHK-Cu

Receptor Agonists

Dose

50MG

Purity

99.838%

Form

Lyophilized

View Options · $45.00
For Research Use Only

Epithalon

Receptor Agonists

Dose

10MG

Purity

99.838%

Form

Lyophilized

View Options · $45.00
For Research Use Only

DSIP

Receptor Agonists

Dose

5MG

Purity

99.838%

Form

Lyophilized

View Options · $35.00
For Research Use Only

CJC 1295 with DAC

Receptor Agonists

Dose

5MG

Purity

99.838%

Form

Lyophilized

View Options · $70.00
For Research Use Only

CJC-1295 No DAC

Receptor Agonists

Dose

5/5MG

Purity

99.838%

Form

Lyophilized

View Options · $70.00
For Research Use Only

Cagrilintide

Receptor Agonists

Dose

5MG

Purity

99.838%

Form

Lyophilized

View Options · $57.00
For Research Use Only

BPC 157

Receptor Agonists

Dose

5, 10MG

Purity

99.838%

Form

Lyophilized

View Options · $35.00
For Research Use Only

Every peptide tested

Rigorous 3rd party testing with full documentation

Shop now
COA Library

99%+ Purity
Guaranteed

30-day return policy

Rigorous
Testing

Always 3rd party tested

Fast & Free
Shipping

Free shipping over $150

Customer
Service

24/7 Chat & Email

Shop peptides

G3-R

Receptor Agonists

Dose

10,30MG

Purity

99.838%

Form

Lyophilized

Out of Stock
For Research Use Only

G2-T

Receptor Agonists

Dose

10,30MG

Purity

99.838%

Form

Lyophilized

View Options · $75.00
For Research Use Only

G1-S / C-Amylin Blend

Receptor Agonists

Dose

5/5MG

Purity

99.838%

Form

Lyophilized

View Options · $130.00
For Research Use Only

G1-S

Receptor Agonists

Dose

5, 10MG

Purity

99.838%

Form

Lyophilized

View Options · $55.00
For Research Use Only

C-Amylin

Receptor Agonists

Dose

5MG

Purity

99.838%

Form

Lyophilized

View Options · $80.00
For Research Use Only

IGF1-LR3

Receptor Agonists

Dose

1MG

Purity

99.838%

Form

Lyophilized

View Options · $85.00
For Research Use Only

Thymosin Alpha-1

Receptor Agonists

Dose

10MG

Purity

99.838%

Form

Lyophilized

View Options · $85.00
For Research Use Only

Bacteriostatic Water

Receptor Agonists

Dose

Purity

99.838%

Form

Lyophilized

View Options · $8.00
For Research Use Only

Tirzepatide

Receptor Agonists

Dose

10, 30MG

Purity

99.838%

Form

Lyophilized

View Options · $1.00
For Research Use Only

Tesamorelin

Receptor Agonists

Dose

10MG

Purity

99.838%

Form

Lyophilized

View Options · $85.00
For Research Use Only

TB500 Blend

Receptor Agonists

Dose

5/5, 10/10MG

Purity

99.838%

Form

Lyophilized

View Options · $80.00
For Research Use Only

TB-500

Receptor Agonists

Dose

10MG

Purity

99.838%

Form

Lyophilized

View Options · $80.00
For Research Use Only

Sermorelin

Receptor Agonists

Dose

5MG

Purity

99.838%

Form

Lyophilized

View Options · $55.00
For Research Use Only

Semax

Receptor Agonists

Dose

30MG

Purity

99.838%

Form

Lyophilized

View Options · $60.00
For Research Use Only

Semaglutide

Receptor Agonists

Dose

5, 10MG

Purity

99.838%

Form

Lyophilized

View Options · $28.00
For Research Use Only

Selank

Receptor Agonists

Dose

5MG

Purity

99.838%

Form

Lyophilized

View Options · $45.00
For Research Use Only

Retatrutide

Receptor Agonists

Dose

10, 30MG

Purity

99.838%

Form

Lyophilized

View Options · $90.00
For Research Use Only

PT-141

Receptor Agonists

Dose

10MG

Purity

99.838%

Form

Lyophilized

View Options · $50.00
For Research Use Only

Oxytocin

Receptor Agonists

Dose

5MG

Purity

99.838%

Form

Lyophilized

View Options · $26.00
For Research Use Only

NAD+

Receptor Agonists

Dose

500MG

Purity

99.838%

Form

Lyophilized

View Options · $70.00
For Research Use Only

MOTS-C

Receptor Agonists

Dose

10MG

Purity

99.838%

Form

Lyophilized

View Options · $60.00
For Research Use Only

Melanotan-II

Receptor Agonists

Dose

10MG

Purity

99.838%

Form

Lyophilized

View Options · $45.00
For Research Use Only

KPV

Receptor Agonists

Dose

10MG

Purity

99.838%

Form

Lyophilized

View Options · $25.00
For Research Use Only

KLOW

Receptor Agonists

Dose

80MG

Purity

99.838%

Form

Lyophilized

View Options · $110.00
For Research Use Only

Ipamorelin

Receptor Agonists

Dose

5MG

Purity

99.838%

Form

Lyophilized

View Options · $40.00
For Research Use Only

GLOW

Receptor Agonists

Dose

70MG

Purity

99.838%

Form

Lyophilized

View Options · $105.00
For Research Use Only

GHK-Cu

Receptor Agonists

Dose

50MG

Purity

99.838%

Form

Lyophilized

View Options · $45.00
For Research Use Only

Epithalon

Receptor Agonists

Dose

10MG

Purity

99.838%

Form

Lyophilized

View Options · $45.00
For Research Use Only

DSIP

Receptor Agonists

Dose

5MG

Purity

99.838%

Form

Lyophilized

View Options · $35.00
For Research Use Only

CJC 1295 with DAC

Receptor Agonists

Dose

5MG

Purity

99.838%

Form

Lyophilized

View Options · $70.00
For Research Use Only

CJC-1295 No DAC

Receptor Agonists

Dose

5/5MG

Purity

99.838%

Form

Lyophilized

View Options · $70.00
For Research Use Only

Cagrilintide

Receptor Agonists

Dose

5MG

Purity

99.838%

Form

Lyophilized

View Options · $57.00
For Research Use Only

BPC 157

Receptor Agonists

Dose

5, 10MG

Purity

99.838%

Form

Lyophilized

View Options · $35.00
For Research Use Only

About Crux Peptides

At Crux Peptides, our mission is to provide laboratories and researchers with the highest-quality peptides possible. Multiple rounds of High-Performance Liquid Chromatography isolate our products by removing contaminating reagents and byproducts of synthesis. As a final measure of peptide accuracy, our analytical lab uses mass spectrometry to verify the theoretical molecular weight of each peptide. At Biotech Peptides, we lead the industry by offering the synthesis of ANY peptide desired. Contact us, and be sure to include the sequence and quantity desired.

Contact Us

Frequently Asked Questions

Quick answers about our research compounds, shipping, and quality standards
Yes. Every batch of Crux Peptide research compounds is third-party tested, and results are documented in a Certificate of Analysis (COA) specific to that lot. Purity data is verified before any batch is released for sale
Yes. Every order includes access to the COA matching the exact lot/batch number shipped, so you can verify purity and composition data for that specific unit — not a generic, site-wide COA.
Our research peptides are manufactured and tested to meet a minimum purity threshold verified by HPLC and/or mass spectrometry, as reflected in each batch’s COA. Exact purity percentages vary by product and lot and are listed on the corresponding COA.
No. All products sold by Crux Peptide are intended strictly for laboratory research purposes. They are not drugs, dietary supplements, foods, or cosmetics, and are not intended for human or animal consumption, diagnostic use, or in vitro use in humans. By purchasing, you confirm you are a qualified researcher acquiring these compounds for lawful research use only
Most peptides should be stored in a freezer (typically -20°C) prior to reconstitution to preserve stability, and protected from light and moisture. Specific storage guidance is included with each product and on its COA — always follow the handling instructions provided with your order.
Orders are packaged to protect compound integrity in transit, with cold-chain handling used where required. We ship via FedEx with tracking provided on every order.
[Confirm current policy before publishing — your checkout logic already includes PO Box handling, so this answer should mirror whatever restriction you have live: e.g., “Certain shipping restrictions apply to PO boxes and select regions; these are flagged automatically at checkout.”]
Each product ships with its lot number identified, which corresponds to the batch-specific COA available for that item. If you can’t locate your COA, contact our support team with your order number and lot number.
[Insert your actual policy — e.g., due to the sensitive/perishable nature of research compounds, returns may be limited to unopened, unused products within X days, or non-returnable once shipped. This should match whatever policy is legally reviewed for your business.]
Read More FAQs

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