Custom Peptides
Bespoke synthesis of any peptide sequence — from simple linear chains to complex cyclic, modified, and conjugated structures.
Your Sequence, Our Expertise
Whether you need a single milligram of a novel analogue or kilograms of a clinical candidate, our custom synthesis service delivers with precision and speed.
Our team of experienced peptide chemists reviews every order before synthesis begins, advising on potential synthesis challenges, purification strategies, and the most appropriate protecting group scheme for your target sequence.
We handle sequences from 2 to 100+ amino acids, including difficult sequences with high hydrophobicity, multiple disulfide bonds, or unusual amino acid content.
Standard Deliverables
- Lyophilised peptide (white to off-white powder)
- Certificate of Analysis (purity, identity, appearance)
- Analytical HPLC chromatogram
- ESI-MS spectrum with MW confirmation
- Safety Data Sheet (SDS/MSDS)
Request a Custom Quote
Modifications & Special Services
Cyclisation
Head-to-tail, side-chain to side-chain, disulfide, and lactam bridge cyclisation for enhanced stability.
PEGylation
Site-specific PEG attachment (1–40 kDa) to improve half-life, solubility, and reduce immunogenicity.
Isotope Labelling
¹³C, ¹⁵N, and ²H stable isotope incorporation for SILAC, metabolic labelling, and MS-based quantification.
Fluorescent Labels
FITC, FAM, TAMRA, Cy3/Cy5, BODIPY, and other fluorophore conjugates for imaging and FRET studies.
Unusual Amino Acids
D-amino acids, N-methyl amino acids, β-amino acids, Aib, Orn, Hyp, and 300+ non-natural building blocks.
Biotin Conjugation
N- or C-terminal biotin with optional spacer (Ahx, PEG) for streptavidin capture and pull-down assays.
Click Chemistry Handles
Azide, alkyne, DBCO, and tetrazine functionalities for bioorthogonal conjugation reactions.
Scale-up to GMP
Research-to-GMP technology transfer with full process validation and regulatory documentation support.
Standard Turnaround Times
| Sequence Length | Purity | Scale | Delivery |
|---|---|---|---|
| 2–10 AA | ≥95% | 1–100 mg | 3–5 business days |
| 11–20 AA | ≥95% | 1–100 mg | 5–7 business days |
| 21–40 AA | ≥95% | 1–50 mg | 7–10 business days |
| 41–100 AA | ≥90% | 1–10 mg | 10–15 business days |
| Any length | ≥98% GMP | Any scale | On quote |
Rush delivery (50% surcharge) available for standard sequences ≤30 AA. Contact us for urgent requirements.