Custom Peptide Synthesis Services

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Custom Peptide Synthesis Services

3-5 Day Delivery with RUSH Peptide Synthesis Service. Made in USA 🇺🇸.

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1. Please click here to receive a quote now!

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2. If you have a quote number already, please click here to place an order now!

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LifeTein® is a custom peptide synthesis service company that has developed a proprietary technology called PeptideSynTM. This technology uses Fmoc and Boc chemistry, a special solid support resin, and microwave technology to provide a platform for continuous peptide synthesis. One of the many advantages of this technology is that it allows LifeTein to offer competitive pricing.

LifeTein has extensive experience in using microwave technologies to synthesize peptides, including peptides that are over 100 amino acids long. The longest peptide that LifeTein has synthesized to date is 169 amino acids. The company guarantees that all the peptides it provides are HPLC-purified and have the correct molecular weight, as confirmed by Electrospray Ionization (ESI) Mass Spectrometry analysis.

LifeTein offers a wide range of peptides with different types of special modifications, such as Peptide Oligo Conjugate by Click Chemistry, Stapled Peptide, Lipid Nanoparticles, Stable Isotope Labeled Peptides, Peptide Nucleic Acids, Fluorescent Peptide: Cy3/Cy5/Cy7, Phosphorylated Peptide, Glycosylation, Peptide pool service, Biotinylated Peptides, Cell-Permeable Peptide, Cyclic Peptide, Long Peptide Synthesis (up to 169 amino acids), MAP Peptide Synthesis, and D Amino Acid Peptide.

Click here to see the full list of modifications.


NUCLEIC ACID VECTORS AND USES THEREOF: LifeTein synthesized a peptide of 133 amino acids. The peptide sequence includes at least one cell-permeable peptide (CPP) domain, one secretion signal sequence, one DNA binding domain, and other SHT protein.

You might be interested in this article: How Do Peptides Fold?
Tip: How to detect small peptide clearly and sensitively by Western blotting or SDS-PAGE?

Phosphorylated Peptides

Phosphorylation: Posttranslational modification on Tyr, Ser and Thr residues, signal transduction, gene expression and protein-protein interaction

Biotinylated Peptides

Biotinylation: Strong affinity for streptavidin and avidin to be used in histocytochemistry, immunoassays, and fluorescence based flow cytometry

Cyclic Peptides

Cyclization: Peptides can be cyclized by disulfide bond, head-to-tail, amide or thioester cyclization to stabilize the peptide conformation, increase bioactivity, and enzyme stability

Long Peptide Synthesis

Long Peptide Synthesis: An alternative approach to exogenous protein expression

Cell Permeable Peptides

Cell Permeable Peptides: Deliver biologically active cargo to the cell interior; Enter the plasma membrane of a cell independent of a membrane receptor


Linker, Spacer, PEGylations: Reduce steric hindrance at the binding sites of the peptide and improve proteolytic stability and solubility of peptides

Fluorescent Peptides

fluorescent labelings: FITC, FAM, TAMRA, Rhodamine, Dansyl, 4-Dinitrophenyl (Dnp), 7-methoxycoumarin acetic acid (Mca) Cy3, Cy5, Cy7 for Fluorescence based assays, flow cytometry, protein-protein interaction, and localization studies

Short Linear Peptide

Short Peptide Synthesis: dipeptides or tripeptides as the ligands for signal transduction or cosmetic applications

D Amino Acid Peptides

D Amino Acid Peptides: Resistant to proteases for higher stability and special structure for peptide drug design

TFA Free Acetate Peptides

TFA Free Acetate Peptides: Low toxic peptides for peptide drug and cell studies

peptide oligonucleotide conjugate

Rush Peptide Service: Receive your peptides in a week and accelerate your research

Peptide magnetic agarose conjugate

Peptide Magnetic Agarose Conjugate: Conjugate your peptide to the magnetic agarose for easy binding assay

N Terminal Modification Peptides

N Terminal Acetylation: Increase peptide stability by preventing N and C-terminal degradation.

C Terminal Modification Peptides

C Terminal Amidation: Neutralize negative charge created by the C-terminal COOH. Mimic native proteins, and remove hydrogen bonding which may interfere with the assays

Multiple Antigenic Peptides (MAP)

Multiple Antigenic Peptides (MAP), Dendrimers and Dendrons: Branched peptides MAP4 or MAP8 have a high molar ratio of the peptide antigen for higher immune responses

BSA, KLH and OVA Conjugation, Immunogenic Peptide

Immunogenic Peptides: BSA, KLH or OVA Conjugation: Conjugated peptides for ELISA, antibody production applications

Peptide Library

Peptide Library: Large scale of peptide screening for new drug candidates

Special Amino Acid Peptides

Stapled Peptide, Glycosylation, and Special Amino Acids: Palmitic acid increases the cell permeability and helps the binding of the peptides to a cell membrane.

Features and Benefits

Frequently Asked Questions: Peptide Synthesis

  1. How should I store and handle the synthesized peptides?
  2. How should I dissolve peptides?
  3. What is net peptide content?
  4. How do I detect small peptides using SDS-PAGE?
  5. ...

CPP Peptide Synthesis

The process of introducing medicines into cells has always proved to be a major challenge for scientists. However, CPPs have the ability to enter a cell through the plasma membrane independent of a membrane receptor. They are usually small peptides 10-30 residues in length.

Stapled Peptide Synthesis Service

Peptide synthesis: Stapled peptide synthesis magic bullet

Click here or picture below for details.

cell permeable peptide synthesis service

The following table shows a selection of currently known CPPs, together with their origins and sequences. Click here for more details.Check more for case studies.



HIV-1 protein



order this peptide now!
FITC-Stearyl-R8 Control peptide

How to estimate prices and place orders for custom peptide synthesis:

Please fax our order form to 1-888-791-1618 or email us at

1. You can use the following table to estimate peptide synthesis price. Please inquire for more pricing information:

Custom peptide synthesis Pricing Examples
(Prices are per amino acid, and are valid for peptides up to 30 residues. Get a quote for peptides sized 30 to 200 residues. )
Quantity Purity
Crude >85% (Get a quote for desalted, 75%, 80% and other purities) >95% (Get a quote for >98%, 99% and other purities)

1-4 mg

(Get a quote for 5-9mg, 10-14mg and other quantities )

$3.20 $9.00 $11.56
15-20 mg $4.76 $15.30 $20.40
40-50 mg $6.46 $19.89 $27.20
70-80 mg $7.82 $26.69 $35.70
1000 mg $28.05 $79.90 $105.40

Click here to see the list of available peptide modifications

  • Our standard peptide synthesis package includes a certificate of analysis, and HPLC and MS reports.
  • Amino Acid Analysis and N Elemental Analysis are available at competitive prices.
  • Free peptide aliquoting services are available.
  • Solubility tests are available.
  • TFA removal service is available.
  • Discounts are offered for large orders.
  • The turnaround time for regular peptide synthesis services is 2-3 weeks.
  • Shipping price: $35.00 (U.S.), $65.00 (International).

2. Quotations

  • Method 1: Obtain a quote using the online quotation form:
  •                         peptide synthesis Quote

  • Method 2: Please complete the Quotation Form for the peptide(s) you would like to purchase and either fax it to 1-888-791-1618 or email it to We will send you a formal quote within 24 hours.

3. Placing an order

  • Method 1: Place your order online if you already have a quote number:
  •                         peptide synthesis Order

  • Method 2: Please sign the quote form we send you, and either fax it to 1-888-791-1618 or email it with your Purchase Order, if applicable, to We will confirm your order within 24 hours.