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High-purity research peptides, verified batch by batch.
Third-party tested for identity and purity. Every order ships with a batch-specific Certificate of Analysis. For laboratory research use only.
Browse catalog ✓ ≥98–99% HPLC purity ✓ Batch-specific COA ✓ Mass-spec verified ✓ Fast, discreet shipping
🔬 Third-party lab tested 📄 COA with every order 🚚 Same-day dispatch 🔒 Secure checkout
Research Bundles
Multi-vial stacks — separate sealed vials, supplied together at a lower price.
- SAVE $17.00RG Stack — RP-1 + RP-2 Bundle
- 1× RP-1 (5 mg) vial
- 1× RP-2 (10 mg) vial
$119.00 $136.00View bundle - SAVE $12.00Foundation Stack — RP-4 + RP-8 Bundle
- 1× RP-4 (10 mg) vial
- 1× RP-8 (5 mg) vial
$104.00 $116.00View bundle
Full Catalog
All compounds — tested, verified, and documented.
- Most Popular RP-1 RP-1 Research Peptide 5 mg · ≥99% · Lyophilized powder ★★★★★ 4.9 (1,284) $62.00 /vial $620.00 per kit · 10 vials
- RP-2 RP-2 Research Peptide 10 mg · ≥99% · Lyophilized powder ★★★★★ 4.8 (2,140) $74.00 /vial $740.00 per kit · 10 vials
- RP-3 RP-3 Research Peptide 5 mg · ≥98% · Lyophilized powder ★★★★★ 4.9 (806) $58.00 /vial $580.00 per kit · 10 vials
- RP-4 RP-4 Research Peptide 10 mg · ≥99% · Lyophilized powder ★★★★★ 4.7 (1,533) $68.00 /vial $680.00 per kit · 10 vials
- RP-5 RP-5 Research Peptide 5 mg · ≥98% · Lyophilized powder ★★★★★ 4.8 (612) $64.00 /vial $640.00 per kit · 10 vials
- RP-6 RP-6 Research Peptide 5 mg · ≥98% · Lyophilized powder ★★★★★ 4.6 (430) $54.00 /vial $540.00 per kit · 10 vials
- New RP-7 RP-7 Research Peptide 10 mg · ≥99% · Lyophilized powder ★★★★★ 4.9 (298) $82.00 /vial $820.00 per kit · 10 vials
- RP-8 RP-8 Research Peptide 5 mg · ≥98% · Lyophilized powder ★★★★★ 4.7 (967) $48.00 /vial $480.00 per kit · 10 vials
Why researchers choose Apex
≥99% HPLC Purity
Batch COA
Mass-Spec Verified
Cold-Chain Handling
Trusted by 8,000+ research buyers
★★★★★ 4.8 average
Verified buyer★★★★★
Consistent purity, COA matched the lot, and shipping was fast. Reordering.
Verified buyer★★★★★
Documentation is thorough and the analytics were exactly as listed.
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New compounds, restocks, and catalog updates.