Custom Peptides United Peptide Corporation offers a complete range of modification and conjugation options for custom peptide synthesis. If you would like to order a custom peptide, please submit the sequence via United Peptide Corporation's Online Quote System. Once submitted, United Peptide Corporation will analyze the sequence and send you an officical quote according to your complete set of requirements within one business day.

If you would like to order a custom peptide, please submit the sequence via United Peptide Corporation's Online Quote System.

Modification List (For modification is not on the list, please send us an email)

• End Modification: Acetylation (N-Terminal), Acetylation (Lys), Formylation (N-Terminal), Fatty acid (N-Terminal), Myristic acid (N-Terminal), Palmytolyl (N-Terminal), Cys(Acm), Cys(tBu), Benzyloxycarbonylation (CBZ), Amidation (C-Terminal), p-Nitroanilide (pNA, C-Terminal), AMC ( C-Terminal), Succinylation (Suc, N-Terminal)
• Special Amino acid: D-Ile, D-Arg, D-Cys, D-Asp, D-Asn, D-Glu, D-Gln, D-Ser, D-His, D-Thr, D-Trp, D-Lys, D-Tyr, D-Orn, Orn, Abu, Aib, (D)1-Nal, (D)2-Pal, (D)4-Cl-Phe, Nva, Nle, Hse, Hcy, Pen, Mpa, N-Methyl amino acid (Ala, Phe, Leu, Ile, Val, Gly, Met), D-Ala, D-Leu, D-Met, D-Pro, D-Val, D-Phe, pGlu, Hyp, Other amino acid, Dinitrobenzoylation (Lys), Lys(Me2), Phosphorylation (Tyr, Ser, Thr, single site), Tyr(SO3H2), Ser(octanoic acid)
• Fluorescence/Dye labeling: Biotin (N-Terminal, Y/N Ahx), Biotin (Lys in sequence), Biotin (without Lys in sequence), FITC/5-FAM (N-Terminal, Y/N Ahx), Dansyl (N-Terminal, Y/N Ahx), MCA (N-Terminal), HYNIC (N-Terminal), DTPA (N-Terminal)
• Cyclic Peptide: Disulfide bridge 1st, Disulfide bridge 2nd, Disulfide bridge 3rd, Amide cyclic (Side chain, end)
• Quenched Fluorescent Peptide: Abz/ Tyr (3-NO2), EDANS/DABCYL, Multiple Antigenic Peptide System, Asymmetric 4 branches, Asymmetric 8 branches,
• Protein Conjugation: KLH, BSA, OVA