Chemicals & Small Molecules

N,N'-bis-(acid-PEG3)-Benzothiazole Cy5 is a PEG linker containing a cyanine dye with excitation/emmission maximum 649/667 nm and a free terminal carboxyl acid. Terminal carboxylic acid can react with primary amine groups in the presence of of activators (e.g. EDC, or HATU) to form a stable amide bond. The hydophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

MC-Val-Cit-PAB-OH is a cleavable peptide linker. The Val-Cit was designed to be cleaved specifically by Cathepsin B. MC group is reactive with thiol moiety Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Mal-PEG2-Val-Cit-PAB-OH is a cleavable ADC linker. The Val-Cit will specifically be cleaved by Cathepsin B. As this enzyme is only present in the lysosome, the ADC payload will be released only in the cell. The maleimide group is reactive toward thiol groups between pH 6.5 to 7.5. PEG chain increases the water solubility of the compound. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Mal-PEG4-Val-Cit-PAB-OH is a cleavable peptide linker. The Val-Cit was designed to be cleaved by Cathepsin B. The maleimide group is reactive toward thiol groups between pH 6.5 to 7.5. PEG4 arm increases the aqueous solubility of the compound. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Azido-PEG1-Val-Cit-PAB-OH is a cleavable ADC linker. The Val-Cit will specifically be cleaved by Cathepsin B. As this enzyme is only present in the lysosome, the ADC payload will be released only in the cell. Azido group will react with DBCO, BCN or other Alkyne group through click chemistry, PEG spacer increases aqueous solubility. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Azido-PEG3-Val-Cit-PAB-OH is a cleavable ADC linker. The Val-Cit will specifically be cleaved by Cathepsin B. Azido group will react with DBCO, BCN or other Alkyne group through click chemistry, PEG spacer increases aqueous solubility. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Azido-PEG4-Val-Cit-PAB-OH is a cleavable ADC linker which contains an azide, a hydrophilic PEG spacer, a Val-Cit dipeptide, and a PAB functional group. The benzylic alcohol on the PAB can be used to attach with reactive groups such as PNP for conjugation with drug payloads, while the azide is free to perform click chemistry with terminal alkynes or strained cyclooctynes such as DBCO or BCN. The Val-Cit dipeptide is cleaved by cellular proteases within the cell to allow for efficient payload delivery via an elimination mechanism within the PAB structure.

Val-Cit-PAB-OH is a peptide cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs). The Val-Cit will specifically be cleaved by Cathepsin B. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Fmoc-Val-Cit-PAB-OH is a cleavable ADC linker. The Val-Cit will specifically be cleaved by Cathepsin B. As this enzyme is only present in the lysosome, the ADC payload will be released only in the cell. Fmoc can be deprotected under basic condition. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.