41 research-grade peptides. 99%+ purity guaranteed on every vial. Third-party COA on every batch. US-based distribution.
99%+ Purity
Third-Party COA
US Distribution
Research Use Only
41
RESEARCH PEPTIDES
99%+
PURITY GUARANTEED
9
CATEGORIES
3rd
PARTY COA
PRODUCT CATEGORIES
Shop by Research Focus
Every category curated for serious researchers. All products carry third-party COA and are manufactured to 99%+ purity standards.
WHY 305 PEPTIDES
The American Standard
Built on one principle — research deserves the highest quality inputs. No compromises.
99%
Purity Guaranteed
Every vial tested to 99%+ purity. Third-party COA on every batch.
USA
American Distribution
Based in Miami, FL. US warehousing means faster shipping and no customs delays.
41
Always In Stock
Deep inventory across all 41 SKUs. Your research is never interrupted by stock-outs.
COA
Full Transparency
HPLC purity, mass spec confirmation, and endotoxin results on every COA.
QUALITY ASSURANCE
Our Quality Standard
Every 305 Peptides product is independently tested before it ships.
HPLC Purity Testing
High-Performance Liquid Chromatography confirms peptide identity and purity on every batch before release.
99%+
Mass Spectrometry
Molecular weight confirmation via MS analysis ensures sequence accuracy and rules out adulteration.
✓ Verified
Endotoxin Testing
LAL endotoxin test on all injectable-format peptides. Results documented on every COA.
<1 EU/mg
WHOLESALE & CONTACT
Request the Full Catalog
We offer bulk pricing for qualified researchers and distributors.
EMAIL
info@305peptides.com
LOCATION
Miami, Florida · USA
FOR RESEARCH USE ONLY. All products sold by 305 Peptides are intended solely for laboratory research purposes. Not approved by the FDA for human or veterinary use. 305 Peptides makes no therapeutic claims.