4.8
COA Verified
⚡ >99% Purity Guaranteed · Third-Party Tested
The Future of Peptide Research Starts Here
Premium research peptides verified by independent laboratories. Unmatched purity. Uncompromised quality. Built for serious researchers.
4.7
Based on 109 reviews on ★ Trustpilot
>99%
Purity
10K+
Orders Shipped
48hr
Avg. Delivery
>99% PURITYLab-tested
SAME-DAY DISPATCHFast fulfillment
4.7 TRUSTPILOT109 Reviews
>99% PURITYLab-tested
SAME-DAY DISPATCHFast fulfillment
4.7 TRUSTPILOT109 Reviews
>99% PURITYLab-tested
SAME-DAY DISPATCHFast fulfillment
4.7 TRUSTPILOT109 Reviews
>99% PURITYLab-tested
SAME-DAY DISPATCHFast fulfillment
4.7 TRUSTPILOT109 Reviews
>99% PURITYLab-tested
SAME-DAY DISPATCHFast fulfillment
4.7 TRUSTPILOT109 Reviews
>99% PURITYLab-tested
SAME-DAY DISPATCHFast fulfillment
4.7 TRUSTPILOT109 Reviews
Research-Grade Peptides
Our Best Sellers
>99% Purity · Third-Party Tested
SINGAPORE ONLY
Bac-Water 10ML
COA Verified
SINGAPORE ONLY
Bac-Water 5ML
COA Verified
Example product
COA Verified
Example product
COA Verified
SINGAPORE ONLY
Retatrutide 10MG
COA Verified
SINGAPORE ONLY
Retatrutide 20MG
COA Verified
Delivered Securely. Every Time.
2-Day Air Across the U.S.
About Us
Research-Grade Peptides, Independently Verified for >99% Purity.
At SKO Compounds, we specialize in providing research-use-only peptides backed by rigorous third-party testing. Every batch is held to the highest purity standards so you can order with confidence. We ship same-day on all orders and have built a reputation among researchers across the country for quality, speed, and consistency.
SHOP NOW →Quality Assurance
Research-Grade Standards
Every compound is manufactured, tested, and documented to the highest laboratory standards.
Peptide Synthesis
All compounds are synthesized using solid-phase peptide synthesis (SPPS) and verified through HPLC and mass spectrometry.
Third-Party Tested
Every batch undergoes independent laboratory analysis to confirm identity, purity, and composition before release.
Research-Grade Purity
Our peptides exceed >99% purity, meeting the stringent standards required for reliable preclinical research.
Lyophilized Stability
Freeze-dried formulations ensure maximum shelf life and stability for long-term laboratory storage.
Full Documentation
Each product ships with a complete Certificate of Analysis (CoA) detailing purity, molecular weight, and impurity profiles.
Regulatory Compliance
All products are labeled and sold strictly for laboratory and research use in accordance with applicable regulations.
Frequently Asked Questions
Everything you need to know about peptide research
What purity level are your peptides and how is it verified?
Every compound we sell exceeds 99% purity. Each batch is sent to an independent, third-party laboratory and verified by HPLC and mass spectrometry. The resulting Certificate of Analysis (CoA) is published for the exact lot you receive.
What is a Certificate of Analysis (CoA) and how do I read it?
A CoA is the lab report that confirms a product's identity, purity, and molecular weight. It lists the testing method, the measured purity percentage, and any detected impurities so you can verify exactly what is in the vial.
What is bacteriostatic water and why is it recommended?
Bacteriostatic water is sterile water containing 0.9% benzyl alcohol, which inhibits bacterial growth. It is the standard diluent used to reconstitute lyophilized peptides for research.
How should I store peptides before reconstitution?
Lyophilized peptides are stable at room temperature for short periods, but for long-term storage we recommend keeping them refrigerated or frozen, away from light and moisture.
How fast do you ship and is cold shipping required?
We dispatch same-day on orders placed before our daily cut-off and ship 2-day air across the U.S. Lyophilized peptides are stable in transit.
Do you ship internationally?
We currently focus on domestic U.S. shipping. For bulk or international inquiries, please reach out through our Contact page.
Are these peptides for human use?
No. All products are sold strictly for in-vitro and pre-clinical laboratory research.
What is your return and refund policy?
Returns are handled case-by-case. If a product arrives damaged or does not match its CoA, contact support and we'll make it right.
How can I contact SKO Compounds support?
Email support@skocompounds.com or call (310) 431-9233.