Scales and Modifications

Synthesis of modified peptides is one of our key specialties, and is also one of the most affordable premium services in the market. Our modified peptides are all purified in accordance to your project(s) specifications and delivered with desired reports. Pricing and turnaround time with modifications vary with quantity and purity of peptide desired.


Purity                                                                                              Scale
2mg 5mg 10mg 20mg 25mg 30mg 40mg 50mg 60mg 80 – 100mg 1000mg

* Price for polypeptide synthesis based on number of amino acid

** Pricing may vary and subject to desired purity and quantity of the synthetic products.



Types Of Modifications
N-/C- terminal Modification

Acetylation (N-Terminal)

Acetylation (Lys)

Formylation (N-Terminal)

Fatty acid (N-Terminal)

Myristicacid (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)

Customized Amino Acid Modification

D-Ile, Gamma-Glu, bta-Asp

D-Ary, 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

D-Ala, D-Leu, D-Met, D-Pro, D-Val, D-Phe, β-Ala, pGlu, Hyp

N-Methyl amino acid (Ala, Phe, Leu, Ile, Val, Gly, Met)

Other amino acid

Dinitrobenzoylation (Lys)

Phosphorylation (Tyr, Ser, Thr, single site)

Ser (octanoic acid)

Fluorescence/Dye Labeling Polypeptides

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 Polypeptides

Disulfide bridge 1st  

Amide cyclic (Side chain, end)

Quenched Fluorescent Peptides

Abz / Tyr (3-NO2)



*For longer polypeptides (30aa and above), other modifications which not listed above or any other enquiries, please contact our local sales team for technical support:

Tel    : +65 6954 2519

Email  :