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1,2-Bis(methylthio)benzene-d6 is the deuterium labeled 1,2-Bis(methylthio)benzene (HY-W654023).

(2r,3r,4r,5r)-2-((Bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-4-((tert-Butyldimethylsilyl)oxy)-5-(4-(4-chlorophenoxy)-2-oxopyrimidin-1(2h)-yl)tetrahydrofuran-3-yl (2-cyanoethyl) diisopropylphosphoramidite is a phosphoramidite that can be used in the synthesis of oligonucleotides.

LNA-Guanosine 3'-CE phosphoramidite (Lna-g amidite) is an essential building block to Locked Nucleic Acid (LNA) oligonucleotide synthesis, which includes a ribonucleoside linked by a methylene unit between the 2’-oxygen and 4’-carbon atoms, paralleling DNA polymer assembly.

(2R,3S,5R)-2-((Bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-5-(6-((1-(dimethylamino)ethylidene)amino)-7H-purin-7-yl)tetrahydrofuran-3-yl (2-cyanoethyl) diisopropylphosphoramidite is a phosphoramidite that can be used in the synthesis of oligonucleotides.

AZD-PEG13-PFP is a PEG linker containing an AZD group and a PFP ester group, an activated ester that reacts with primary amines to form amide bonds. PFP ester has been found to be more stable than other amine reactive groups because it is less likely to undergo hydrolysis. The hydrophilic PEG spacer increases solubility in aqueous media.

C11-PEG4-alcohol is a linker with an aliphatic carbon chain and a PEG chain. The hydrophilic PEG chain increases the water solubility of the compounds in the aqueous media. The hydroxyl group enables further derivatization or replacement with other reactive functional groups.

NH2-PEG3-Val-Cit-PAB-OH is a cleavable ADC linker featuring a primary amine, a hydrophilic PEG spacer, a Val-Cit dipeptide, and a PAB group. The benzylic alcohol on the PAB can be used to attach with reactive groups such as PNP for conjugation with drug payloads. The primary amine is free to perform a wide variety of reactions such as coupling with carboxylic acids, reductive aminations with ketones or aldehydes, or other more specialized uses such as in SNAr reactions or heterocyclic chemistry. 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.

NH2-PEG6-Val-Cit-PAB-OH is a cleavable ADC linker featuring a primary amine, a hydrophilic PEG spacer, a Val-Cit dipeptide, and a PAB group. The benzylic alcohol on the PAB can be used to attach with reactive groups such as PNP for conjugation with drug payloads. The primary amine is free to perform a wide variety of reactions such as coupling with carboxylic acids, reductive aminations with ketones or aldehydes, or other more specialized uses such as in SNAr reactions or heterocyclic chemistry. 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.

Bis-sulfone-PEG8-NHS Ester is a bis-alkylating labeling reagent that is selective for the cysteine sulfur atoms from a native disulfide. These reagents undergo bis-alkylation to conjugate both thiols derived from the two cysteine residues of a reduced native disulfide bond such as the interchain disulfide bonds of an antibody. The reaction results in covalent rebridging of the disulfide bond via a three carbon bridge leaving the protein structurally intact. The hydrophilic PEG spacer increases solubility in aqueous media.

Benzyl N1-(PEG1-acid)-N6-(t-Boc)-L-lysinate is a biochemical reagent that can be used as a biological material or organic compound for life science related research.

4-Azide-TFP-Amide-SS-propionic acid contains an aryl azide, a cleavable disulfide bond, and a carboxylic acid. The aryl azide can be photo-activated with UV light (250 to 350 nm) for conjugation with biomolecules. Fluoro helps to stabilize the free radical intermediate. The carboxylic acid can be reacted with amines in the presence of an activator to form an amide bond. The disulfide bond can be cleaved via reducing agents.

4-Azide-TFP-Amide-PEG4-acid contains an aryl azide and a carboxylic acid with a PEG spacer to increase aqueous solubility and decrease steric hinderance during ligation. The aryl azide can be photo-activated with UV light (250 to 350 nm) for conjugation with biomolecules. Fluoro helps to stabilize the free radical intermediate. The carboxylic acid can be reacted with amines in the presence of an activator to form an amide bond.

Mal-PEG2-Amide is a PEG linker with a maleimide group which can react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol.

Aminooxy-PEG2-amine hydrochloride (compound L3) is an aqueous soluble crosslinker. The aminooxy group can be used in bioconjugation. It reacts with an aldehyde to form an oxime bond, if a reductant is used, it will form a hydroxylamine linkage. The amino group is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. Aminooxy compounds are very reactive and sensitive; they cannot be stored for long term.

Aminooxy-PEG1-amine is a chemical reagent containing an aminooxy group and a primary amine. The aminooxy group is reactive with an aldehyde to form an oxime bond. If a reductant is used, it will form a hydroxylamine linkage. The amino group is reactive withactivated NHS esters, or carboxylic acid in the presence of coupling reagent EDC. Aminooxy compounds are very reactive and sensitive; they cannot be stored for long term.

Biotin-SS-Amine hydrochloride is a cleavable biotinylation reagent. The amine group can react with carboxylic acids, activated NHS esters and other carbonyl groups. The disulfide bond in this linker can be cleaved using reducing agents such as DTT, BME and TCEP.

N-(Azido-PEG3)-NH-PEG3-t-butyl ester is a click chemistry reagent with a terminal azide group and secondary amine NH group. NH group is reactive with NHS ester, The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond. The azide group can participate in Click Chemistry.

Mal-PEG5-amine is a PEG linker containing a maleimide group and an amine group. The hydrophilic PEG spacer increases solubility in aqueous media. The amine group is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol.

Fmoc-PEG4-hydroxy is a PEG linker containing an Fmoc-protected amine and a hydroxyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The Fmoc group can be deprotected under basic condition to obtain the free amine which can be used for further conjugations. The hydroxyl group enables further derivatization or replacement with other reactive functional groups.

Azido-PEG1-hydrazide hydrochloride is a bifunctional PEG linker containing an azide group and a hydrazide group. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. Hydrazine moiety reacts with an aldehyde to form semi-permanent hydrazone bonds.