Click Chemistry

Fmoc-Gly-Gly-OH is a peptide linker. The Fmoc group can be deprotected under basic condition to obtain the free amine which can be used for further conjugations. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

5-(Boc-amino)-1-pentanol is a linker containing a hydroxyl group and Boc-protected amino group. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The Boc group can be deprotected under mild acidic conditions to form the free amine. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

5-Amino-1-pentanol is a linker containing a hydroxyl group and amine group. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The amine group is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Fmoc-Ala-Pro-OH is a linker with an Fmoc-protected amine and a terminal carboxylic acid. The Fmoc group can be deprotected under basic condition to obtain the free amine which can be used for further conjugations. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

BP Fluor 488 DBCO is a popular labeling dye used in copper-free Click Chemistry reactions. It will react with the azide group in antibody, proteins, peptides, amino-modified oligos, and other target molecules. The dye has an excitation peak at 499 nm and an emission peak at 520 nm. The conjugates are widely used in microscopy, flow cytometry, and other applications. BP Fluor 488 is a pure 5- sulfonated rhodamine molecule and it eliminates the lot-to-lot variation caused by two isomers ratio differences.

Bis-Sulfone-PEG4-acid is a reagent with a sulfone and an acid. The sulfone group can be conjugated with thiol groups of proteins. The terminal acid reacts with primary amines with the help of activators (EDC or HATU) to from stable amide bonds. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Acid-PEG4-Val-Cit-PAB-MMAE is a cleavable ADC linker featuring a carboxylic acid, a hydrophilic PEG spacer, and a Val-Cit-PAB dipeptide ligated to an MMAE payload. Carboxylic acids are reactive towards amines or alcohols while the Val-Cit-PAB motif is an enzyme-cleavable linker. This linker efficiently releases the toxin, MMAE, to target cells to cause cellular apoptosis.

NHS ester-PEG4-Val-Cit-PAB-MMAE can be used antibody drug conjugation as a precursor. It contains a PEG4 spacer, a protease-sensitive Val-Cit dipeptide, a PAB linker and an MMAE payload. It can be attached to a monoclonal antibody (MAB) which directs it toward cancer cells. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Sulfo-NHS-Biotin is a linker containing a sulfo-NHS moiety and a biotin group. Sulfo-NHS enables control and modification of carbodiimide crosslinking reactions involving activation of carboxylates for conjugation with primary amines. The terminal biotinylation can react with amine molecules in the presence of activator EDC or HATU. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.