Receptor Chem vs Research Chemical: Peptide Vendor Comparison 2026
Compare Receptor Chem and Research Chemical — mid vs mid pricing, COA-verified/COA-verified testing, 0 shared peptides.
Receptor Chem
Location: UK
Peptides: 1
COA: ✓ Available
Third-party tested: ✓ Yes
Top peptides:
- • MK-677
Research Chemical
Location: USA
Peptides: 17
COA: ✓ Available
Third-party tested: ✓ Yes
Top peptides:
- • BPC-157
- • TB-500
- • CJC-1295
- • Ipamorelin
- • Sermorelin
Comparison Overview
Both Receptor Chem and Research Chemical compete in the mid market segment. Receptor Chem offers with COA availability and is third-party tested, while Research Chemical is with COA availability and third-party tested. Both offer shipping to multiple regions; Receptor Chem has a reputation score of 4.3/5 vs Research Chemical's 4.1/5.
Key Metrics
| Metric | Receptor Chem | Research Chemical |
|---|---|---|
| Established | 2018 | 2020 |
| Location | UK | USA |
| Price Tier | mid | mid |
| Reputation Score | 4.3/5 | 4.1/5 |
| COA Available | ✓ Yes | ✓ Yes |
| Third-Party Tested | ✓ Yes | ✓ Yes |
| Shipping Regions | UK, Europe, International | USA |
| Payment Methods | credit card, bank transfer, crypto | credit card, debit card, e-check, venmo |
| Peptides Offered | 1 | 17 |
Unique to Receptor Chem
- MK-677
Unique to Research Chemical
- BPC-157
- TB-500
- CJC-1295
- Ipamorelin
- Sermorelin
- GHK-Cu
- PT-141
- AOD-9604
- GHRP-2
- GHRP-6
Receptor Chem Highlights
Strengths
- Highly respected UK-based vendor with excellent quality reputation
- Comprehensive testing — Mass Spec, HPLC, FTIR, NMR
- 99%+ purity on all products
Considerations
- Primarily a SARMs vendor — very limited peptide selection
- Only MK-677 as a peptide-adjacent compound
Research Chemical Highlights
Strengths
- Excellent Trustpilot rating (4.9/5)
- Peptides shipped on ice for stability
- Lyophilized (freeze-dried) form for optimal shelf life
Considerations
- Relatively newer vendor
- USA shipping only
Which Vendor to Choose?
Receptor Chem has been in business longer, offering more operational history.
⚠️ Important: This comparison is for informational purposes only. Research peptides responsibly and consult appropriate medical professionals. The Peptide Index does not endorse any vendor.
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