Coupling Reagent

ACUBIOCHEM offers a wide variety of coupling reagents, with a comprehensive selection and a large inventory of hundreds of items. Biochemical coupling reagents are used to connect biological molecules (such as proteins, peptides, nucleic acids, etc.) with other molecules (such as fluorescent markers, antibodies, drugs, etc.) through chemical covalent bonds. These coupling reagents have wide applications in fields such as biological labeling, proteomics research, drug development, and the preparation of biomaterials.

Structure of Coupling Reagents

There are many types of biochemical coupling reagents, which can be classified into the following categories based on their reactive groups and functional characteristics:

Amine coupling reagents: Such as NHS esters (N-Hydroxysuccinimide Ester) and EDC (1-(3-Dimethylaminopropyl)-1-ethyl carbodiimide Hydrochloride), commonly used for coupling with lysine or primary amine groups.
Thiol coupling reagents: Such as DBCO (1,2-Dicarboxybenzothiazole) and Bis-PEG2-endo-BCN, which achieve efficient coupling through click chemistry reactions.
Carboxylic acid coupling reagents: Such as EDAC (1-(Ethyl dimethylaminopropyl)-carbodiimide Hydrochloride), used for amidation reactions between carboxyl and amino groups.
Photo-reactive crosslinkers: Such as photoinitiators, used for photo-induced covalent connections.
Special function coupling reagents: Such as zero-length crosslinking agents, which achieve rapid coupling by directly forming stable covalent bonds.

Application Fields of Coupling Reagents

The application range of biochemical coupling reagents is very broad, including but not limited to:

Biological labeling and imaging: For example, Biotin-PEG4-DADPS-Picolyl-azide is used for protein labeling and imaging; Gd-DOTA-NH2 is used in magnetic resonance imaging studies.
Drug development: Coupling reagents can be used to link drug molecules with antibodies or other biological molecules, forming antibody-drug conjugates (ADCs) to enhance the targeting and efficacy of drugs.
Site-specific coupling of natural antibodies through chemical coupling.
Proteomics research: Coupling reagents are used to label specific amino acid residues (such as lysine) for easier subsequent analysis.
Preparation of biomaterials: For example, acetic acid polyethylene glycol (AA-PEG-PCL) is used to prepare materials with good biocompatibility.

 As a professional coupling reagent supplier,  the coupling reagents from ACUBIOCHEM feature rigorous quality control, ensuring high-purity products. All coupling reagents come with a Certificate of Analysis (COA) and various testing spectra, including HPLC, MS, and NMR. Packaging sizes can be customized, and shipments can be made at any time to support various levels of applications. For inquiries, please contact info@acubiochem.

Please check our product list as below.