GenScript has been providing reliable custom peptide synthesis services for 10,000+ scientists worldwide for 18+ years. With our proprietary microwave-assisted PepPower™ peptide synthesis platform, GenScript is now able to offer high-quality peptides with 100% guaranteed quantity at industry-leading speed, as fast as 5 days, to help expedite your research. Also for a limited time we are offering a purity upgrade from lower to higher at no extra charge to help you obtain better results while saving you money.

>98% Success Rate
Industry-leading speed:
As fast as 5 BDs
18+ Years
Peptide Synthesis Experience
mg to kg
Crude to >98%
Up to 200 AA
300+ modification

Package Options Custom Peptide Synthesis

Fast Peptide Synthesis 3 Rush Peptide Synthesis 3 Regular Peptide Synthesis 3
Starting turnaround time 1
(Business Days)
6 5 10
Sequence length Up to 25 AA Up to 200 AA
Purity Free Upgrade! ≥70% to ≥98% Crude Crude to ≥98%
Guaranteed Quantity 2 Up to 100 mg mg to kg
Solubility Test Service Free
TFA Removal Service Standard Service Standard & Guaranteed Service
Modifications 30+ modifications
List of modifications for fast and rush services
300+ modifications
List of modifications for custom peptide synthesis service

1.Indicated delivery times are for standard sequences only. Difficult sequences or sequences with multiple modifications may require additional time.
2.Turnaround time includes all business days from order confirmation to completion, not including shipping time.
3.Guaranteed quantity is valid for Regular and Express Peptide Synthesis Services on orders with less than 20 mg in quantity.
4.Custom Peptide service includes Regular and Express Peptide services. Express Peptide Synthesis Service includes Fast and Rush Peptide Synthesis Services. Express peptide synthesis service is limited for non-complex sequences and modifications, please contact us or request a quote.

Peptide Library

Crude Peptide Library Upgraded! Purified
Peptide Library
Crude Micro-scale
Peptide Library
Purified Micro-scale
Peptide Library
Turnaround Time 1
(Business Days)
9 - 17 15 - 20 15 - 20 15 - 20
Sequence Length 5 - 15 AA 16 - 25 AA 5 - 25 AA 5 - 20 AA
Purity Crude ≥70% to ≥98% Crude >70%
Quantity 1 – 20 mg 1 – 9 mg 3 0.2 - 0.5 mg
Minimum order size 24 peptides
Deliverable format 2 Lyophilized peptides in 96-well plate or individual well-labelled vials Lyophilized or liquid (suspended in 50% (v/v) acetonitrile/water containing 0.05% TFA) in Thermo Scientific Matrix 96-tube plates
Quality documents 4 COA & MS only
COA, HPLC & MS for each peptide
COA, HPLC & MS for each peptide COA, HPLC & MS for each peptide
Modifications Comprehensive: Biotin, Fluorescent Dyes, Phosphorylation, Methylation, Acylation, Acetylation, Unnatural Amino Acids, and many more Amidation, Acetylation, Biotin, FITC-Ahx, Isotope Labeling on K/R, Arg (13C6, 15N4), Lys (13C6, 15N2) and many more

1.Turnaround time may be longer for orders over 60 peptides, difficult modifications, TFA removal, or if analytical HPLC is requested.
2.Turnaround time includes all business days from order confirmation to completion, not including shipping time.
3.Automated peptide pooling available upon request.
4.For quantity that is over 4 mg, please contact our technical account manager.
5.Additional services (TFA removal, analytical HPLC, etc.) are available at additional cost.

The GenScript Edge

Peptide Library Service

Large variety of peptides for target screening, immunotherapy, vaccine development, drug discovery and proteomics.

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NeoAntigen Peptide Service

From functional screening of neoantigen candidates for TCR therapy to clinical stage vaccine immunogenicity testing.

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Large Scale Peptide Synthesis Service

Perfect for peptide drug & Active Pharmaceutical Ingredient (API), cosmetic peptides, and feed additive development.

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Your peptides will arrive as lyophilized powder with following features:

HPLC and MS Reports for Each Peptide

ArgonShield Packaging

Certificate of Analysis: pThe appearance, quantity, molecular weight and purity of each peptide will be analyzed and included in the Certificate of Analysis report.

Premium Services

AccuPep+ QC services >>
Our AccuPep+ QC services that can help you assess peptide sample consistency and obtain reproducible results.
Solubility Testing Service >>
Dissolve peptide with up to 3 testing solvents to achieve the maximum concentration by saving your peptide sample.
TFA Removal Services >>
Reduce TFA content to be <1% to help avoid the impact of TFA on your research.
Endotoxin Control and Analysis Services >>
GenScript offers Endotoxin Control and Analysis services to reduce endotoxin content to be ≤0.01 EU/µg.

Tools & Resources


Testimonials Robert Bao, Principal Investigator

PACT Pharma Inc., USA

GenScript peptide synthesis gives us amazingly fast turnaround time and very competitive prices. Their peptide quality has been excellent. Our experience with them has been so positive that we have essentially shut down our internal peptide synthesis efforts and now use them for all of our custom peptides.

Customer Reviews

178 Customer Reviews

4.5 out of 5 stars


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