copper-free click cycloaddition

By Targets:	ADC Linker (5) Amino Acid Derivatives (1) Biochemical Assay Reagents (4) Fluorescent Dye (1) Liposome (1)
By Research Areas:	Cancer (4)
Click Chemistry:	ADC Synthesis (1) TCO (1) Labeling and Fluorescence Imaging (2) DBCO (4) Alkynes (3)
Oligonucleotides:	Pegylated Lipids (1)

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-130809

DBCO-PEG4-Biotin 4 Publications Verification	Biochemical Assay Reagents	Cancer
DBCO-PEG4-Biotin is an azadibenzocyclooctyne-biotin derivative containing a biotin group and 4 PEGs. DBCO-PEG4-Biotin is a versatile biotinylation reagent used for the introduction of a biotin moiety to azide-labeled biomolecules via copper-free strain-promoted alkyne-azide click chemistry (SPAAC) reaction . DBCO-PEG4-Biotin is a click chemistry reagent, it contains a DBCO group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups.

HY-115524

DBCO-NHS ester 2	ADC Linker	Cancer
DBCO-NHS ester 2 is a cleavable linker that is used for making antibody-drug conjugate (ADC). DBCO-NHS ester 2 is a derivative of Dibenzylcyclooctyne (DBCO) used in copper-free click chemistry[1]. DBCO-NHS ester 2 is a click chemistry reagent, it contains a DBCO group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups.

HY-130086

Bis-PEG4-NHS ester	ADC Linker	Cancer
Bis-PEG4-NHS ester is a crosslinking reagent and amine-reactive modulator .Bis-PEG4-NHS ester reacts with primary amine groups on liposome surfaces via amide bond formation to covalently attach dibenzylcyclooctyne groups, with a hydrophilic PEG4 spacer reducing steric hindrance for subsequent click chemistry .Bis-PEG4-NHS ester enables site-specific antibody coupling to liposome surfaces via copper-free strain-promoted alkyne-azide cycloaddition click chemistry without disrupting liposome structure in minimal organic solvent volumes .Bis-PEG4-NHS ester undergoes hydrolysis during annealing to form -COOH groups that interact with PbI and FAI to enhance perovskite structural integrity, passivate defects, and modulate nucleation kinetics to regulate crystal growth .Bis-PEG4-NHS ester enhances device efficiency and long-term stability when used as an antisolvent additive for p-i-n perovskite solar cells .

HY-155887

DSPE-PEG-Amine, MW 3400 ammonium DSPE-PEG-NH2, MW 3400 ammonium	Liposome	Cancer
DSPE-PEG-Amine (DSPE-PEG-NH2), MW 3400 ammonium is an amino-functionalized PEGylated phospholipid. It serves not only as a key component for preparing σ receptor-targeted liposomes (such as anisamide-modified lipids) but also as a starting material for synthesizing click chemistry- and tumor-targeted lipids including DSPE-PEG-DBCO (HY-155788) and DSPE-PEG2000-TCO (HY-170704). DSPE-PEG-Amine, MW 3400 ammonium effectively modulates the ζ potential of nanoparticles, enables complexation with nucleic acids or proteins to protect DNA from nuclease degradation, and supports ligand conjugation on the nanoparticle surface. It is used in studies related to DU-145 tumors, breast cancer, and other relevant research .

HY-151682

H-L-Lys(Norbornene-methoxycarbonyl)-OH	Amino Acid Derivatives	Others
H-L-Lys(Norbornene-methoxycarbonyl)-OH is a Norbornene (HY-W013021)-derivatized lysine that can be click-functionalized. H-L-Lys(Norbornene-methoxycarbonyl)-OH can be used for the mild and selective modification of proteins in a copper-free click reaction .

HY-174929A

DBCO-PEG5000-Amine DBCO-PEG5000-NH2	Biochemical Assay Reagents	Others
DBCO-PEG5000-Amine (DBCO-PEG5000-NH2) is a polyethylene glycol derivative containing dibenzocyclooctyne. DBCO-PEG-Amine is a universal, modular "bridge molecule": it forms stable covalent linkage with target materials (e.g., MSN or polymers) via the amino group at one end, while the DBCO group at the other end enables efficient, specific, and biocompatible click chemical conjugation with any azide-bearing biological entities (e.g., bacteria, cells) in subsequent steps .

HY-D1625

Cy5 DBCO chloride	Fluorescent Dye	Others
Cy5 DBCO chloride is an azide reaction probe and the addition of DBCO molecules allows the imaging of azide-labelled biomolecules by a copper-free "Click Chemistry" reaction . Cy5 DBCO (chloride) is a click chemistry reagent, it contains a DBCO group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups.

HY-151824

Boc-L-Phe(4-NH-Poc)-OH	ADC Linker	Others
Boc-L-Phe(4-NH-Poc)-OH is a click chemistry reagent containing an azide group. Used as an orthogonally protected building block in peptide synthesis. Propargyloxycarbonyl, commonly abbreviated as Poc or Pryoc, can either be used as alkyne component for standard Click conjugation or in combination with tetrazine linkers in copper-free Diels-Alder type Click reactions. It also has applications as unusual protecting group for amines, hydroxy functions and as esters. All 3 are stable to neat TFA, but can be cleaved at ambient temperature with Co2(CO)8 in TFA:DCM. Deprotection with other transition metals like palladium have also been reported . Boc-L-Phe(4-NH-Poc)-OH is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

HY-W714234

Endo-BCN CE-phosphoramidite	Biochemical Assay Reagents	Others
Endo-BCN CE-phosphoramidite is a stable and one of the most reactive cyclooctynes for copper-free click chemistry. Unlike dibenzocyclooctyne (DBCO), BCN is reactive both to azides (strain-promoted azyde-alkyne cycloaddition, SPAAC) and tetrazines (inverse electron demand Diels-Alder reaction, IEDDA).

HY-151780

Fmoc-L-Dap(Pentynoyl)-OH	ADC Linker	Others
Fmoc-L-Dap(Pentynoyl)-OH is a click chemistry reagent containing an azide group. Fmoc-L-Dap(Pentynoyl)-OH serves as an amino acid building block for introducing alkyne functions into peptide sequences by standard Fmoc/tBu protocols. The alkyne residue can be engaged for copper catalyzed click reaction with organic azides or with tetrazines for copper-free conjugations . Fmoc-L-Dap(Pentynoyl)-OH is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

HY-181228

DBCO-PEG10-Biotin	Biochemical Assay Reagents	Others
DBCO-PEG10-Biotin is an azadibenzocyclooctyne-biotin derivative containing a biotin group and 10 PEGs. DBCO-PEG10-Biotin is a versatile biotinylation reagent used for the introduction of a biotin moiety to azide-labeled biomolecules via copper-free strain-promoted alkyne-azide click chemistry (SPAAC) reaction. DBCO-PEG10-Biotin is a click chemistry reagent, it contains a DBCO group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups .

HY-151837

H-L-Phe(4-NH-Poc)-OH hydrochloride	ADC Linker	Others
H-L-Phe(4-NH-Poc)-OH (hydrochloride) is a click chemistry reagent containing an azide group. Used as a modified Phe or Tyr analogue in protein and peptide biosynthesis. Propargyloxycarbonyl, commonly abbreviated as Poc or Pryoc, can either be used as alkyne component for standard Click conjugation or in combination with tetrazine linkers in copper-free Diels-Alder type Click reactions. It also has applications as unusual protecting group for amines, hydroxy functions and as esters. All 3 are stable to neat TFA, but can be cleaved at ambient temperature with Co2(CO)8 in TFA:DCM. Deprotection with other transition metals like palladium have also been reported . H-L-Phe(4-NH-Poc)-OH (hydrochloride) is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

Cat. No.	Product Name

HY-L258

Alkyne Compound Library	0 compounds
In modern medicinal chemistry and chemical biology research, alkyne (-C≡C-) structures play an important role in click chemistry, bioorthogonal labeling, and the construction of functional molecules due to their unique linear geometry and high reactivity. In particular, driven by the development of copper-catalyzed azide-alkyne cycloaddition (CuAAC) and copper-free click reactions (SPAAC), terminal alkyne groups have become important “chemical handles” for building complex biomolecular systems. The MCE Alkyne Compound Library contains 0 compounds designed for the construction of click chemistry reaction systems and the development of diverse functional molecules. In drug discovery, these structures serve as key reactive sites that can efficiently undergo click reactions with azide groups, enabling modular assembly of PROTAC molecules, construction of ADC linkers, and rapid synthesis of bioorthogonal labeling probes. In addition, alkyne groups exhibit high stability, mild reaction conditions, and excellent biocompatibility, allowing them to maintain reactivity in complex biological environments. This contributes to improved efficiency and controllability in drug development, making them indispensable chemical building blocks in modern drug design and functional molecular engineering.

Alkyne Compound Library

0 compounds

In modern medicinal chemistry and chemical biology research, alkyne (-C≡C-) structures play an important role in click chemistry, bioorthogonal labeling, and the construction of functional molecules due to their unique linear geometry and high reactivity. In particular, driven by the development of copper-catalyzed azide-alkyne cycloaddition (CuAAC) and copper-free click reactions (SPAAC), terminal alkyne groups have become important “chemical handles” for building complex biomolecular systems.

The MCE Alkyne Compound Library contains 0 compounds designed for the construction of click chemistry reaction systems and the development of diverse functional molecules. In drug discovery, these structures serve as key reactive sites that can efficiently undergo click reactions with azide groups, enabling modular assembly of PROTAC molecules, construction of ADC linkers, and rapid synthesis of bioorthogonal labeling probes. In addition, alkyne groups exhibit high stability, mild reaction conditions, and excellent biocompatibility, allowing them to maintain reactivity in complex biological environments. This contributes to improved efficiency and controllability in drug development, making them indispensable chemical building blocks in modern drug design and functional molecular engineering.

Cat. No.	Product Name	Type

HY-D1625

Cy5 DBCO chloride	Fluorescent Dyes
Cy5 DBCO chloride is an azide reaction probe and the addition of DBCO molecules allows the imaging of azide-labelled biomolecules by a copper-free "Click Chemistry" reaction . Cy5 DBCO (chloride) is a click chemistry reagent, it contains a DBCO group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups.

Cat. No.	Product Name	Type

HY-155887

DSPE-PEG-Amine, MW 3400 ammonium DSPE-PEG-NH2, MW 3400 ammonium	Biochemical Assay Reagents
DSPE-PEG-Amine (DSPE-PEG-NH2), MW 3400 ammonium is an amino-functionalized PEGylated phospholipid. It serves not only as a key component for preparing σ receptor-targeted liposomes (such as anisamide-modified lipids) but also as a starting material for synthesizing click chemistry- and tumor-targeted lipids including DSPE-PEG-DBCO (HY-155788) and DSPE-PEG2000-TCO (HY-170704). DSPE-PEG-Amine, MW 3400 ammonium effectively modulates the ζ potential of nanoparticles, enables complexation with nucleic acids or proteins to protect DNA from nuclease degradation, and supports ligand conjugation on the nanoparticle surface. It is used in studies related to DU-145 tumors, breast cancer, and other relevant research .

DSPE-PEG-Amine, MW 3400 ammonium

DSPE-PEG-NH2, MW 3400 ammonium

Biochemical Assay Reagents

DSPE-PEG-Amine (DSPE-PEG-NH2), MW 3400 ammonium is an amino-functionalized PEGylated phospholipid. It serves not only as a key component for preparing σ receptor-targeted liposomes (such as anisamide-modified lipids) but also as a starting material for synthesizing click chemistry- and tumor-targeted lipids including DSPE-PEG-DBCO (HY-155788) and DSPE-PEG2000-TCO (HY-170704). DSPE-PEG-Amine, MW 3400 ammonium effectively modulates the ζ potential of nanoparticles, enables complexation with nucleic acids or proteins to protect DNA from nuclease degradation, and supports ligand conjugation on the nanoparticle surface. It is used in studies related to DU-145 tumors, breast cancer, and other relevant research .

HY-174929A

DBCO-PEG5000-Amine DBCO-PEG5000-NH2	Biochemical Assay Reagents
DBCO-PEG5000-Amine (DBCO-PEG5000-NH2) is a polyethylene glycol derivative containing dibenzocyclooctyne. DBCO-PEG-Amine is a universal, modular "bridge molecule": it forms stable covalent linkage with target materials (e.g., MSN or polymers) via the amino group at one end, while the DBCO group at the other end enables efficient, specific, and biocompatible click chemical conjugation with any azide-bearing biological entities (e.g., bacteria, cells) in subsequent steps .

DBCO-PEG5000-Amine

DBCO-PEG5000-NH2

Biochemical Assay Reagents

DBCO-PEG5000-Amine (DBCO-PEG5000-NH2) is a polyethylene glycol derivative containing dibenzocyclooctyne. DBCO-PEG-Amine is a universal, modular "bridge molecule": it forms stable covalent linkage with target materials (e.g., MSN or polymers) via the amino group at one end, while the DBCO group at the other end enables efficient, specific, and biocompatible click chemical conjugation with any azide-bearing biological entities (e.g., bacteria, cells) in subsequent steps .

Cat. No.	Product Name		Classification

HY-130809

DBCO-PEG4-Biotin 4 Publications Verification		DBCO
DBCO-PEG4-Biotin is an azadibenzocyclooctyne-biotin derivative containing a biotin group and 4 PEGs. DBCO-PEG4-Biotin is a versatile biotinylation reagent used for the introduction of a biotin moiety to azide-labeled biomolecules via copper-free strain-promoted alkyne-azide click chemistry (SPAAC) reaction . DBCO-PEG4-Biotin is a click chemistry reagent, it contains a DBCO group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups.

HY-115524

DBCO-NHS ester 2		DBCO ADC Synthesis
DBCO-NHS ester 2 is a cleavable linker that is used for making antibody-drug conjugate (ADC). DBCO-NHS ester 2 is a derivative of Dibenzylcyclooctyne (DBCO) used in copper-free click chemistry[1]. DBCO-NHS ester 2 is a click chemistry reagent, it contains a DBCO group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups.

HY-151682

H-L-Lys(Norbornene-methoxycarbonyl)-OH		Labeling and Fluorescence Imaging TCO
H-L-Lys(Norbornene-methoxycarbonyl)-OH is a Norbornene (HY-W013021)-derivatized lysine that can be click-functionalized. H-L-Lys(Norbornene-methoxycarbonyl)-OH can be used for the mild and selective modification of proteins in a copper-free click reaction .

HY-174929A

DBCO-PEG5000-Amine DBCO-PEG5000-NH2		DBCO
DBCO-PEG5000-Amine (DBCO-PEG5000-NH2) is a polyethylene glycol derivative containing dibenzocyclooctyne. DBCO-PEG-Amine is a universal, modular "bridge molecule": it forms stable covalent linkage with target materials (e.g., MSN or polymers) via the amino group at one end, while the DBCO group at the other end enables efficient, specific, and biocompatible click chemical conjugation with any azide-bearing biological entities (e.g., bacteria, cells) in subsequent steps .

HY-D1625

Cy5 DBCO chloride		DBCO Labeling and Fluorescence Imaging
Cy5 DBCO chloride is an azide reaction probe and the addition of DBCO molecules allows the imaging of azide-labelled biomolecules by a copper-free "Click Chemistry" reaction . Cy5 DBCO (chloride) is a click chemistry reagent, it contains a DBCO group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups.

HY-151824

Boc-L-Phe(4-NH-Poc)-OH		Alkynes
Boc-L-Phe(4-NH-Poc)-OH is a click chemistry reagent containing an azide group. Used as an orthogonally protected building block in peptide synthesis. Propargyloxycarbonyl, commonly abbreviated as Poc or Pryoc, can either be used as alkyne component for standard Click conjugation or in combination with tetrazine linkers in copper-free Diels-Alder type Click reactions. It also has applications as unusual protecting group for amines, hydroxy functions and as esters. All 3 are stable to neat TFA, but can be cleaved at ambient temperature with Co2(CO)8 in TFA:DCM. Deprotection with other transition metals like palladium have also been reported . Boc-L-Phe(4-NH-Poc)-OH is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

HY-151780

Fmoc-L-Dap(Pentynoyl)-OH		Alkynes
Fmoc-L-Dap(Pentynoyl)-OH is a click chemistry reagent containing an azide group. Fmoc-L-Dap(Pentynoyl)-OH serves as an amino acid building block for introducing alkyne functions into peptide sequences by standard Fmoc/tBu protocols. The alkyne residue can be engaged for copper catalyzed click reaction with organic azides or with tetrazines for copper-free conjugations . Fmoc-L-Dap(Pentynoyl)-OH is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

HY-151837

H-L-Phe(4-NH-Poc)-OH hydrochloride		Alkynes
H-L-Phe(4-NH-Poc)-OH (hydrochloride) is a click chemistry reagent containing an azide group. Used as a modified Phe or Tyr analogue in protein and peptide biosynthesis. Propargyloxycarbonyl, commonly abbreviated as Poc or Pryoc, can either be used as alkyne component for standard Click conjugation or in combination with tetrazine linkers in copper-free Diels-Alder type Click reactions. It also has applications as unusual protecting group for amines, hydroxy functions and as esters. All 3 are stable to neat TFA, but can be cleaved at ambient temperature with Co2(CO)8 in TFA:DCM. Deprotection with other transition metals like palladium have also been reported . H-L-Phe(4-NH-Poc)-OH (hydrochloride) is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

Cat. No.	Product Name		Classification

HY-155887

DSPE-PEG-Amine, MW 3400 ammonium DSPE-PEG-NH2, MW 3400 ammonium		Pegylated Lipids
DSPE-PEG-Amine (DSPE-PEG-NH2), MW 3400 ammonium is an amino-functionalized PEGylated phospholipid. It serves not only as a key component for preparing σ receptor-targeted liposomes (such as anisamide-modified lipids) but also as a starting material for synthesizing click chemistry- and tumor-targeted lipids including DSPE-PEG-DBCO (HY-155788) and DSPE-PEG2000-TCO (HY-170704). DSPE-PEG-Amine, MW 3400 ammonium effectively modulates the ζ potential of nanoparticles, enables complexation with nucleic acids or proteins to protect DNA from nuclease degradation, and supports ligand conjugation on the nanoparticle surface. It is used in studies related to DU-145 tumors, breast cancer, and other relevant research .

MCE Japan Authorized Agent ナミキ商事株式会社コスモ・バイオ株式会社重松貿易株式会社
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Biochemical Assay Reagents

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