Services
Custom Peptide Synthesis
Peptidesr4u.com offers a bespoke custom synthesis service for research institutions, biotech companies, and independent scientists who require peptides not currently listed in our standard catalogue.
What We Can Synthesise
- Standard linear peptides (2–50 amino acids)
- Cyclic peptides and disulphide-bridged sequences
- Modified peptides including phosphorylated, acetylated, and amidated variants
- Isotopically labelled peptides (¹³C, ¹&sup5;N, deuterium)
- Peptide–conjugate hybrids (PEGylated, fluorescent-labelled)
- Unusual and non-natural amino acid incorporation
Purity Options
| Grade | Purity | Typical Use |
|---|---|---|
| Crude | >70% | Preliminary screening |
| Research | ≥95% | Standard in vitro research |
| High Purity | ≥98% | Bioassay and structural studies |
| GMP-Aligned | ≥99% | Pre-clinical reference standards |
Turnaround Times
- Standard: 10–15 business days from sequence confirmation
- Express: 5–7 business days (surcharge applies)
- Complex sequences: 20–30 business days (assessed individually)
How to Order
Email your sequence in single-letter or three-letter amino acid code to synthesis@peptidesr4u.com along with your required quantity, purity grade, and any modifications. We will provide a formal quotation within 2 business days.
Email synthesis@peptidesr4u.com — include sequence, quantity, purity grade, and any modifications. All enquiries responded to within 2 business days.
Quality Assurance
Every custom peptide is supplied with a full Certificate of Analysis (CoA) including HPLC chromatogram and mass spectrometry confirmation. Analytical data is provided in PDF format.
All custom peptides are supplied strictly for research purposes only. Peptidesr4u.com accepts no liability for any use outside of legitimate scientific research. Orders are subject to our full Terms of Sale.
Last updated: January 2025