Research Grade

Custom Peptide Synthesis

Optimize your peptides by leveraging our vast expertise in liquid and solid phase peptide synthesis, gained from over 30 years of experience serving industry, academia, and governmental agencies.

AnaSpec's peptide synthesis ranges from simple unmodified
to highly modified and hydrophobic peptides.

Request a quote


Up to 60 amino acids


≥95%, ≥90%, ≥85%, ≥70%, or crude (≥98% available for GMP grade)


1mg to hundreds of gram quantities, delivered as gross weight or net weight


Default is TFA salt. We also offer acetate, chloride or ammonium salt exchange for an additional fee

Please note that these specifications may vary for modified peptides

Request a quote


By Mass Spec Analysis

% Purity


Additional testing available upon request:

  • Peptide content determination (CHN analysis or quant-peptide service)
  • Solubility testing
  • Peptide sequence confirmation
  • Counterion content
  • Metal content
  • Endotoxin
  • Bioburden


  • HPLC & Mass Spec chromatograms
  • Technical data sheet (TDS)


Lyophilized powder, peptide in solution on request
For special format, please inquire about our Dispensing options 


Ambient temperature

Lead Time

3-5 weeks
Highly modified peptides may require longer production times

Peptide Modification Experts

We have the know-how to solve your peptide modification needs by incorporating single or multiple modifications at the
sequence N-terminus, C-terminus, and/or internally. We also manufacture simple unmodified and hydrophobic peptides.

View modification table

Fluorescent Dye Labeled Peptides

We manufacture custom peptides with a broad range of premium fluorescent dyes that span the whole visible and near infrared spectrum.

Learn more

FRET Peptides

We offer a full-range of dye-quencher FRET pairs to label your custom peptides

Learn more

TR-FRET Peptides 

We perform custom synthesis of labeled peptides with lanthanide metals as donor molecule.

Learn more

Stapled Peptides

We offer an adaptable platform for the custom synthesis of stapled peptides catering to a variety of biological applications.

Learn more

Cyclic Peptides

We offer a versatile platform for the synthesis of lactam ring cyclic peptides

Learn more


We have developed novel methods for the synthesis and purification of hydrophobic peptide modifications.

Learn more

Glycosylated and Glycated Peptides 

Sugar moieties can be incorporated into your custom peptide(s), at single or multiple locations.

Learn more

Disulfide-Bridged Peptides

We produce disulfide bridged peptides, utilizes stepwise protection or natural folding strategies.

Learn more

Phosphorylated Peptides

Our chemists can incorporate single, or multiple combinations of phosphoserine, phosphotyrosine, or phosphothreonine residues into your custom peptide. 

Learn more

Heavy Isotope-labeled Peptides

Our ClearPoint™ Peptides are dedicated for use in Quantitative Mass Spectrometry and NMR analyses

Learn more

Peptide-Oligo Conjugates

We produce up to 20 mg POCs in our facilities located in Belgium.

Learn more

Your Peptide Synthesis Company

Quality Management

Under our strict quality management system (QMS), each peptide is manufactured using specialized chemical methodologies and then subsequently QC tested for purity and identity by HPLC and Mass Spec Analysis.

Learn more about our QMS


By manufacturing thousands upon thousands of peptides over a span of 30 years, for academia, the biopharmaceutical and biotechnology industries, and governmental agencies, we have the technical knowledge you can trust.

Made in the USA

Our facility in California, encompasses all stages of production including, peptide custom synthesis, purification, lyophilization, and QA/QC, for both R&D production and GMP cleanroom manufacturing.

Explore our facilities


Whether by phone, email, or video chat, our technical team is ready to discuss your next or ongoing custom peptide project. All communications and project information is treated with the utmost security and confidentiality.

Other AnaSpec's Services