Custom Peptide Synthesis

With extensive experience in solid and solution phase synthesis, ChemPep offers custom peptides of the highest quality at the most competitive price. ChemPep has the capacity for both small and large-scale peptide syntheses ranging from milligram to kilogram. We also offer custom services for large peptides, unusual or modified peptides, and specially designed peptides.




• Large peptides: up to 100 amino acids

• Peptides with different purities: up to 98%

• Peptides with different quantities: from mg to kg
• Modified peptides: such as those with unusual amino acids, phosphorylation, biotinylation, terminal modifications and cyclization


Price Estimation & Quotation


• Please click HERE to estimate the cost of your peptide and to use our online quotation form.




All custom peptides are supplied with stringent analytical specifications, which include HPLC and MS analysis.

Most custom peptides can be delivered within 2~3 weeks. The delivery time may vary depends on the peptide length and difficulty.

All information is treated in strict confidence. If required, we will be pleased to sign a client confidentiality agreement before receiving your compound structure.

Modification Capabilities


• N-terminal modification


* Acetylation
* Formylation
* Fatty acid
* Myristoylation
* Palmitoylation
* Succinylation


• C-terminal modification


* Amidation
* pNA


• Peptides containing unusual amino acids


* D-amino acids
* N-Methyl amino acids
* Phosphorylation of Tyr, Ser or Thr


• Fluorescence dye labeling


* Biotin
* FITC/5-FAM (N-Terminal)
* Dansyl (N-Terminal)
* MCA (N-Terminal)
* HYNIC (N-Terminal)


• Quenched fluorescent peptide


* Abz/Tyr (3-NO2)


• Peptide cyclization


* Disulfide bridge formation
* Amide cyclization


• Protein conjugation




• MAPS peptides


* Asymmetric 4 branches
* Asymmetric 8 branches

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