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Research-Grade Peptides

High-Purity Peptides. Precision Delivered.

96.1%–99.8% HPLC purity across published batch testing. Built for serious research.

96–99% HPLC Purity
24+ Products
COA Every Batch
HPLC Purity & Identity Verified
RUO Research Use Only
20+ Compounds Peer-Reviewed Research
COA Every Batch Tested
Our Collection

Browse by compound or format.

Focused research collections — every batch ships with a third-party certificate of analysis.

View full catalog

Nasal Sprays

Ready-to-use nasal spray formats for laboratory research applications.

19 products · 1 format · COA on every batch

Browse Nasal Sprays
Research-Backed Compounds
  • Purity
  • Stability
  • Potency
  • Bioavailability

Every batch is third-party tested and verified. Click each quality attribute above to explore the data behind our standards.

Third-Party Purity Analysis
Average HPLC Purity — Published COAs
Stemcode Peptides 98.9%
Average 98.9% HPLC purity across 18 published Certificates of Analysis →
Long-Term Storage Testing
Degradation Over 12 Months
100% 50% 0%
0 mo4 mo8 mo12 mo
Sealed vial (Stemcode)
Reconstituted Liquid
Analytical Testing
HPLC Chromatogram Analysis
99.1%
Peak Purity
<0.5%
Impurities
CoA
Per Batch
Delivery Method Comparison
Relative Absorption by Route
~90%
Subcutaneous
Injection
~40%
Nasal
Spray
~8%
Oral
Administration

Based on published pharmacokinetic data. Actual values vary by compound.

The Science

Built on Rigorous Science

From synthesis to your doorstep, every step is engineered for maximum purity, stability, and bioavailability.

HPLC-Verified Purity on Every Batch

Every peptide we ship undergoes High-Performance Liquid Chromatography (HPLC) analysis, the gold standard in analytical chemistry. Our third-party labs verify identity, purity, and potency before any product leaves the facility.

We publish full Certificates of Analysis (COAs) for every batch so researchers can verify the integrity of their materials before use.

Average Purity 98.9%
View Lab Results
Method HPLC
Third-Party Verified Yes
COA Published Every Batch
cGMP Compliant Yes

Precision-Engineered Formulations

Our nasal spray formulations are buffered to pH 6.0 for optimal mucosal compatibility. Each formula includes Benzalkonium Chloride (BKC) at 0.01% as a preservative, ensuring sterility throughout the product's shelf life.

We use pharmaceutical-grade excipients and USP-grade water. Every formulation parameter is documented, tested, and reproducible across batches.

pH 6.0 Buffered Solution
BKC 0.01% Preservative
USP Grade Water
Buffer System Phosphate
Preservative BKC 0.01%
pH Level 6.0
Sterility Assured

Multiple Delivery Formats

Our peptides are available in three delivery formats, each optimized for different research applications and bioavailability profiles.

Nasal Sprays

Metered-dose nasal delivery for rapid absorption. Each spray delivers a precise, consistent dose with our calibrated actuator system.

  • Metered-dose actuator
  • pH-buffered formula
  • Preservative included

Tablets

Oral capsule and tablet forms for gastrointestinal research applications. Standardized dosing in convenient capsule format.

  • Precise dosing per capsule
  • GMP-manufactured
  • Shelf-stable

Topical Sprays

Topical formulations for dermatological and wound-healing research. Designed for transdermal peptide delivery studies.

  • Transdermal absorption
  • Research-optimized base
  • Consistent coverage

Temperature-Controlled Shipping

Peptides are sensitive compounds that can degrade with heat exposure. Our secure packaging and fast shipping ensure your research materials arrive in pristine condition, every time.

We use insulated packaging with gel ice packs for all shipments. Every order ships 2-Day, so transit times stay short, and temperature indicators verify chain-of-custody integrity.

Shipping Policy
Insulated Packaging

Double-walled containers with reflective thermal liners maintain stable internal temperatures.

Gel Ice Packs

Phase-change gel packs keep product temperature between 2–8°C throughout transit.

1–3 Day Delivery

2-Day shipping nationwide on every order minimizes time in transit.

Temperature Indicators

Every package includes a temperature indicator strip to verify product integrity on arrival.

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Every compound is documented in published, peer-reviewed literature. Our research library indexes 43 studies across 35 journals for 20 compounds.

Our Studies →
43

Peer-reviewed studies in our research library have examined the mechanisms of action of these peptide compounds.

20
Peptide Compounds
35
Journals Referenced
43
Published Studies

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