Your success is our business.

United BioSystems Inc (formerly United Peptide Corporation) is dedicated to serving the life science community by providing you a complete range of peptide synthesis services for companies in biotechnology and pharmaceuticals, as well as universities and research institutes. We are specialize in both peptide synthesis and peptide modifications. We also have one of the largest collection of Beta-Amyloid peptides, Histone peptides, Cosmetic peptides, Pharmaceutical peptides and cGMP peptides in the world. We uses automatic, semi-automatic and manual peptide synthesizers as well as solution and solid-phase chemistry to offer both small and large-scale peptide synthesis. We offer a variety of modifications including biotinylation, PEGylation, specific peptide labeling, peptide cyclization, and etc. All products are available in the purity range of 90% - 99% and are supplied in lyophilized form. Standard delivery includes a certificate of analysis containing HPLC and Mass Spectral(MS) data.

At United BioSystems , custom synthesized peptides are manufactured under strict quality control processes. We closely monitor the quality of our peptides after at every step of the production process. MS and HPLC analyses are performed for all custom peptides. QC (quality control) and QA (quality assurance) procedures are also followed independently to offer you double guarantee for the highest quality possible of every delivered peptide. Moreover, our dedicated technical account managers will guide your project through every step of the process and constantly keep you informed of the latest project progress.

Get a FREE Quote

Get a FREE Quote today

  • 1-800-549-9126
  • Request a Free Quote

Special Promotion

Special Discount

30% Discount.

Promotion Code: BEST30.

We Guarantee

We guarantee the quality of each and every peptide produced. All purified peptides will be delivered with the MS/HPLC reports.

Our Capabilities

- Length: 2 to 200mer
- Success Rate: > 99%
- Purity: from Crude to 98%
- Scale: from 1mg to 5,000mg