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Custom peptide synthesis

USA Custom Peptide Manufacturer

Confidently define. Precisely synthesize. Rigorously verify. We manufacture custom peptides in USA with in-house coordination from synthesis to final release.

Submit Your Sequence
Lyophilized peptide vials prepared for custom synthesis projects
8,000m2Production and laboratory area
120+R&D, production and quality team
40+Markets served worldwide
Since 2013Research-focused peptide manufacturing
CelluPep peptide production facility in China

Manufacturing confidence

In-house coordination from synthesis to final release

Technical review, production, quality control, packaging and project communication are managed by one team for better continuity at every stage.

  • End-to-end controlSynthesis, purification, analysis and packaging under one roof.
  • Technical expertiseProject decisions connected to the approved specification.
  • Global project supportDocumentation, packaging and delivery planning by market.

功能

Capabilities built around your sequence

Share the sequence and target. We review the practical synthesis route, analytical scope, final format and documentation before quotation.

Submit Your Sequence
Sequence
Linear or cyclic peptides using standard and selected non-standard residues.
Purity grade
Options above 95%, above 98% or 99% and higher by HPLC, subject to feasibility.
Scale
Milligram and gram-scale projects, with larger requirements reviewed separately.
Modifications
N-terminal and C-terminal capping, labels, conjugates and selected modifications.
Counter ions
Acetate, TFA and project-specific options where technically feasible.
Final presentation
Lyophilized material with vial, label and packaging configuration confirmed per project.
Documentation
Certificate of Analysis, HPLC and mass spectrometry records to the agreed scope.

A controlled path from sequence to finished material

Technical decisions remain connected to the approved brief throughout the project.

  1. 01

    Submit requirements

    Sequence, quantity, purity and modifications.

  2. 02

    Feasibility review

    Scope, synthesis route, price and lead time.

  3. 03

    Synthesis

    Manufacture against the approved specification.

  4. 04

    Purification

    Apply the method required for target purity.

  5. 05

    Quality review

    Complete agreed HPLC, MS and final checks.

  6. 06

    Finish and deliver

    Lyophilize, package, document and dispatch.

Quality you can document

Each finished lot is released with the documentation agreed for your project.

Certificate of Analysis

Finished-lot summary prepared to the confirmed scope.

HPLC chromatogram

Purity documentation for the finished material.

Mass spectrometry report

Identity documentation where agreed for the project.

Common questions

Which peptide sequences can be reviewed?

Linear and cyclic sequences using standard and selected non-standard residues can be reviewed. Final feasibility depends on sequence complexity, scale and requested modifications.

Which purity levels are available?

Purity options above 95%, above 98% and 99% or higher may be available. The achievable specification is confirmed during technical review.

Can you support modifications and counter ion selection?

Selected terminal modifications, labels, conjugates and counter ions can be reviewed as part of the project specification.

What determines custom synthesis lead time?

Sequence complexity, quantity, modifications, purification, analytical scope and final packaging all affect timing.

Can a custom project become a repeat supply program?

Yes. Repeat requirements can be planned against the approved specification, packaging format and expected ordering schedule.

Let’s review your sequence

We will confirm feasibility, available scope, quotation requirements and next project steps.

Submit Your Sequence
  • Sequence and modifications
  • Quantity and purity target
  • Packaging and documentation
  • Destination country
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