Antibody-drug conjugates (ADCs) consist of a desirable monoclonal antibody, an active cytotoxic drug and an appropriate linker. An appropriate linker between the antibody and the cytotoxic drug provides a specific bridge, and thus helps the antibody to selectively deliver the cytotoxic drug to tumor cells and accurately releases the cytotoxic drug at tumor sites. In addition to conjugation, the linkers maintain ADCs’ stability during the preparation and storage stages of the ADCs and during the systemic circulation period. The ADCs currently undergoing clinical evaluation contain linkers are mostly classified into two categories: cleavable and noncleavable. Cleavable linkers rely on processes inside the cell to liberate the toxin, such as reduction in the cytoplasm, exposure to acidic conditions in the lysosome, or cleavage by specific proteases within the cell. Noncleavable linkers require proteolytic degradation of the antibody portion of the ADC for release of the cytotoxic molecule, which will retain the linker and the amino acid by which it was attached to the antibody. The selection of linker is target dependent, based on the knowledge of the internalization and degradation of the antibody-target antigen complex, and a preclinical in vitro and in vivo activity comparison of conjugates. Moreover, the choice of a linker is also influenced by which cytotoxin is used, as each molecule has different chemical constraints, and frequently the drug structure lends itself to a specific linker.


Anti-infection >
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Vitamin D Related >
VD/VDR
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Glucocorticoid receptor agonist-1 phosphate Gly-Glu TFA

Glucocorticoid receptor agonist-1 phosphate Gly-Glu (TFA) is a cleavable linker, that can be used to synthesize Antibody-Drug Conjugates (ADCs).

  • CAS Number: 2734877-83-7
  • MF: C44H51F3N3O15P
  • MW: 949.86
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CL2 Linker

CL2 Linker is an ADC linker. CL2-SN-38 and CL2A-SN-38 are equivalent in drug substitution (~6), cell binding (Kd ~1.2 nM), cytotoxicity (IC50 ~2.2 nM), and serum stability in vitro (t1/2 ~20 hours)[1][2].

  • CAS Number: 2270986-66-6
  • MF: C68H103N11O22
  • MW: 1426.61
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

DMAC-PDB

DMAC-PDB is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].

  • CAS Number: 663599-04-0
  • MF: C12H16N2O3S2
  • MW: 300.40
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Bis-PEG5-NHS ester

Bis-PEG5-NHS ester is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].

  • CAS Number: 756526-03-1
  • MF: C22H32N2O13
  • MW: 532.49500
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

DBCO-N-bis(PEG4-NHS ester)

DBCO-N-bis(PEG4-NHS ester) is a PEG linker which contains two PEG4-NHS ester and a DBCO group. DBCO-N-bis(PEG4-NHS ester) is useful for protein modification or labeling.

  • CAS Number: 2639395-38-1
  • MF: C49H62N4O18
  • MW: 995.03
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CCK2R Ligand-Linker Conjugates 1

CCK2R ligand CRL is a ligand-linker conjugate; which conjugates to the cytotoxic antimicrotubule agents Desacetyl Vinblastine Hydrazide (DAVBH) and Tubulysin B Hydrazide (TubBH) via a hydrophilic peptide linker[1].

  • CAS Number: 1452145-13-9
  • MF: C72H110N12O27S
  • MW: 1607.77
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Biotin-PEG4-PFP ester

Biotin-PEG4-PFP ester is a cleavable 4 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].

  • CAS Number: 1334172-58-5
  • MF: C27H36F5N3O8S
  • MW: 657.647
  • Catalog: ADC Linker
  • Density: 1.3±0.1 g/cm3
  • Boiling Point: 804.9±65.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 440.6±34.3 °C

Mal-PEG2-CH2COOH

Mal-PEG2-CH2COOH is an ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].

  • CAS Number: 173323-23-4
  • MF: C10H13NO6
  • MW: 243.21332
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

N-Bromoacetyl-β-alanine

N-Bromoacetyl-β-alanine is an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs[1]. N-Bromoacetyl-β-alanine is also a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[2].

  • CAS Number: 89520-11-6
  • MF: C5H8BrNO3
  • MW: 210.02600
  • Catalog: ADC Linker
  • Density: 1.682g/cm3
  • Boiling Point: 433.4ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 215.9ºC

Aminooxy-PEG2-azide

Aminooxy-PEG2-azide is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1]. Aminooxy-PEG2-azide is also a non-cleavable 2 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[2].

  • CAS Number: 1043426-13-6
  • MF: C6H14N4O3
  • MW: 190.20
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Propargyl-PEG4-NHS ester

Propargyl-PEG4-NHS ester is a nonclaevable 4-unit PEG linker for antibody-drug-conjugation (ADC).

  • CAS Number: 1428629-70-2
  • MF: C16H23NO8
  • MW: 357.356
  • Catalog: ADC Linker
  • Density: 1.2±0.1 g/cm3
  • Boiling Point: 463.1±55.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 233.9±31.5 °C

Mal-VC-PAB-PNP

Mal-VC-PAB-PNP is a cleavable ADC Linker (ADC Linker). Mal-VC-PAB-PNP can be used in the synthesis of antibody-drug conjugates (ADCs)[1].

  • CAS Number: 1096584-62-1
  • MF: C32H37N7O11
  • MW: 695.68
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

AcBut

AcBut is a pH cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].

  • CAS Number: 400046-53-9
  • MF: C73H97IN6O25S3
  • MW: 1681.68
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Azido-PEG8-NHS ester

Azido-PEG8-NHS ester is a cleavable 8 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1]. Azido-PEG8-NHS ester is also a PEG- and Alkyl/ether-based PROTAC linker that can be used in the synthesis of PROTACs[2].

  • CAS Number: 1204834-00-3
  • MF: C23H40N4O12
  • MW: 564.58300
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Mal-PEG4-Val-Cit-PAB-PNP

Mal-PEG4-Val-Cit-PAB-PNP is a cleavable 4 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].

  • CAS Number: 2112738-09-5
  • MF: C40H53N7O15
  • MW: 871.89
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Hydroxy-PEG3-SS-PEG3-alcohol

Hydroxy-PEG3-SS-PEG3-alcohol is also a cleavable 6 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].

  • CAS Number: 5662-81-7
  • MF: C16H34O8S2
  • MW: 293.33800
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Me-Tet-PEG2-NHS

Me-Tet-PEG2-NHS is an ADC Linker containing 2 PEG units. Me-Tet-PEG2-NHS can utilize its own Tetrazine group to undergo a specific inverse electron demand Diels-Alder reaction (iEDDA) with compounds with TCO groups.

  • CAS Number: 2740357-12-2
  • MF: C23H28N6O7
  • MW: 500.50
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Mal-PEG2-Val-Cit-amido-PAB-OH

Mal-PEG2-Val-Cit-amido-PAB-OH is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).

  • CAS Number: 2055041-38-6
  • MF: C29H42N6O9
  • MW: 618.68
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

(S)-16-Amino-10-benzyl-6,9,12,15-tetraoxo-3-oxa-5,8,11,14-tetraazahexadecanoic acid

Gly-Gly-Phe-Gly-NH-CH2-O-CH2COOH is an ADC Linker that can be used to synthesize Drug-Linker Conjugates for ADC. Especially for the synthesis of Deruxtecan (HY-13631E), a toxic drug-linker conjugate[1].

  • CAS Number: 1599440-20-6
  • MF: C18H25N5O7
  • MW: 423.42
  • Catalog: ADC Linker
  • Density: 1.339±0.06 g/cm3(Predicted)
  • Boiling Point: 971.9±65.0 °C(Predicted)
  • Melting Point: N/A
  • Flash Point: N/A

N-Boc-N-methyl-D-Valinol

N-Boc-N-methyl-D-Valinol is an ADC linker with BOC protecting group.

  • CAS Number: 2165479-27-4
  • MF: C11H23NO3
  • MW: 217.30522
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

DBCO-PEG5-NHS ester

DBCO-PEG4-NHS ester is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].

  • CAS Number: 2144395-59-3
  • MF: C36H43N3O11
  • MW: 693.74
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

NH2-PEG6-Boc

NH2-PEG6-Boc is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1]. NH2-PEG6-Boc is also a non-cleavable 6 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[2].

  • CAS Number: 1286281-32-0
  • MF: C19H39NO8
  • MW: 409.51500
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

4-Methyl-4-(methyldisulfanyl)pentanoicacid

4-Methyl-4-(methyldisulfanyl)pentanoic acid is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].

  • CAS Number: 796073-55-7
  • MF: C7H14O2S2
  • MW: 194.31500
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

DMAC-SPDB-sulfo

DMAC-SPDB-sulfo is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].

  • CAS Number: 663599-07-3
  • MF: C16H19N3O8S3
  • MW: 477.53
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

NHS-SS-biotin

NHS-SS-biotin is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].

  • CAS Number: 122266-55-1
  • MF: C19H28N4O6S3
  • MW: 606.69
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Sulfo DBCO-Maleimide

Mal-Sulfo-DBCO is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].

  • CAS Number: 2028281-86-7
  • MF: C28H26N4O8S
  • MW: 578.59
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

NH2-PEG9-acid

NH2-PEG9-acid is a non-cleavable 9 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].

  • CAS Number: 756526-04-2
  • MF: C19H39NO10
  • MW: 441.514
  • Catalog: ADC Linker
  • Density: 1.1±0.1 g/cm3
  • Boiling Point: 547.1±50.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 284.7±30.1 °C

Fmoc-N-amido-PEG8-acid

Fmoc-NH-PEG8-CH2CH2COOH is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].

  • CAS Number: 756526-02-0
  • MF: C34H49NO12
  • MW: 663.75200
  • Catalog: ADC Linker
  • Density: 1.190±0.06 g/cm3
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

20-(Tert-Butoxy)-20-Oxoicosanoic Acid

20-(tert-Butoxy)-20-oxoicosanoic acid is a non-cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs). 20-(tert-Butoxy)-20-oxoicosanoic acid is also a alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs

  • CAS Number: 683239-16-9
  • MF: C24H46O4
  • MW: 398.620
  • Catalog: ADC Linker
  • Density: 0.9±0.1 g/cm3
  • Boiling Point: 496.0±18.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 152.4±14.7 °C

Bis-PEG8-acid

Bis-PEG8-acid is a PEG-based PROTAC linker can be used in the synthesis of PROTACs. Bis-PEG8-acid is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].

  • CAS Number: 1246189-43-4
  • MF: C20H38O12
  • MW: 470.51
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A