The PROTAC linker connects two moieties: a small peptide residue for E3 ubiquitin ligase recognition,and a ligand that can be recognized by a targeted protein. Unlike the small molecule ligands, the length of the linker has been randomly selected for PROTACs, varying from 12-carbon to over 20-carbon in length. An optimal linker will allow for maximal interaction between the two moieties (target protein and E3 ligase) resulting in efficient ubiquitination of the target protein and its ultimate degradation.
The PROTAC linker connects two moieties: a small peptide residue for E3 ubiquitin ligase recognition,and a ligand that can be recognized by a targeted protein. Unlike the small molecule ligands, the length of the linker has been randomly selected for PROTACs, varying from 12-carbon to over 20-carbon in length. An optimal linker will allow for maximal interaction between the two moieties (target protein and E3 ligase) resulting in efficient ubiquitination of the target protein and its ultimate degradation.
The PROTAC linker connects two moieties: a small peptide residue for E3 ubiquitin ligase recognition,and a ligand that can be recognized by a targeted protein. Unlike the small molecule ligands, the length of the linker has been randomly selected for PROTACs, varying from 12-carbon to over 20-carbon in length. An optimal linker will allow for maximal interaction between the two moieties (target protein and E3 ligase) resulting in efficient ubiquitination of the target protein and its ultimate degradation.
The PROTAC linker connects two moieties: a small peptide residue for E3 ubiquitin ligase recognition,and a ligand that can be recognized by a targeted protein. Unlike the small molecule ligands, the length of the linker has been randomly selected for PROTACs, varying from 12-carbon to over 20-carbon in length. An optimal linker will allow for maximal interaction between the two moieties (target protein and E3 ligase) resulting in efficient ubiquitination of the target protein and its ultimate degradation.


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Vitamin D Related >
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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

Ethyl-PEG4-alcohol

Ethyl-PEG4-alcohol is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 5650-20-4
  • MF: C10H22O5
  • MW: 222.27900
  • Catalog: PROTAC Linker
  • Density: 1.026g/cm3
  • Boiling Point: 302.2ºC at 760mmHg
  • Melting Point: N/A
  • Flash Point: 136.6ºC

Tetraethyl butane-1,4-diylbis(phosphonate)

Tetraethyl butane-1,4-diylbis(phosphonate) is an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 7203-67-0
  • MF: C12H28O6P2
  • MW: 330.29500
  • Catalog: PROTAC Linker
  • Density: 1.099g/cm3
  • Boiling Point: 415.8ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 218.7ºC

Propargyl-PEG4-Boc

Propargyl-PEG4-Boc is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 1355197-66-8
  • MF: C16H28O6
  • MW: 316.390
  • Catalog: PROTAC Linker
  • Density: 1.0±0.1 g/cm3
  • Boiling Point: 380.3±32.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 162.2±25.2 °C

Boc-NH-C4-Br

Boc-NH-C4-Br is an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 164365-88-2
  • MF: C9H18BrNO2
  • MW: 252.149
  • Catalog: PROTAC Linker
  • Density: 1.2±0.1 g/cm3
  • Boiling Point: 308.8±25.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 140.5±23.2 °C

Azido-PEG6-CH2COOH

Azido-PEG6-CH2COOH is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 880129-82-8
  • MF: C14H27N3O8
  • MW: 365.38
  • Catalog: PROTAC Linker
  • Density: N/A
  • 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

Dox-Ph-PEG1-Cl

PROTAC Linker 34 is a PROTAC linker, which refers to the alkyl/ether composition. PROTAC Linker 34 can be used in the synthesis of a series of PROTACs. PROTACs contain two different ligands connected by a linker; one is a ligand for an E3 ubiquitin ligase and the other is for the target protein. PROTACs exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins[1].

  • CAS Number: 773095-86-6
  • MF: C11H13ClO3
  • MW: 228.67
  • Catalog: PROTAC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Benzyl-PEG4-THP

Benzyl-PEG4-THP is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 1027926-86-8
  • MF: C20H32O6
  • MW: 368.46
  • Catalog: PROTAC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Thiol-PEG8-alcohol

Thiol-PEG8-alcohol is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 791620-96-7
  • MF: C16H34O8S
  • MW: 386.50100
  • Catalog: PROTAC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Boc-Aminooxy-PEG3-azide

Boc-Aminooxy-PEG3-azide is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 1235514-15-4
  • MF: C13H26N4O6
  • MW: 334.369
  • Catalog: PROTAC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

m-PEG5-Tos

m-PEG5-Tos is a derivative of silybin ethers, extracted from patent CN105037337A (compound III-c). m-PEG5-Tos is a PEG-based PROTAC linker can be used in the synthesis of Silymarin (HY-W043277)[1].

  • CAS Number: 80755-67-5
  • MF: C18H30O8S
  • MW: 424.50600
  • Catalog: PROTAC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Amino-PEG2-NH-Boc

Amino-PEG2-NH-Boc is a PEG-based PROTAC linker can be used in the synthesis of PROTACs[1].

  • CAS Number: 127828-22-2
  • MF: C9H20N2O3
  • MW: 204.26700
  • Catalog: PROTAC Linker
  • Density: 1.024g/cm3
  • Boiling Point: 321.128ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 148.013ºC

Aminooxy-PEG3-C2-thiol

Aminooxy-PEG3-C2-thiol is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 1200365-63-4
  • MF: C8H19NO4S
  • MW: 225.31
  • Catalog: PROTAC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Azido-PEG8-propargyl

Azido-PEG8-propargyl is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 1196733-06-8
  • MF: C19H35N3O8
  • MW: 433.50
  • Catalog: PROTAC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Benzyl-PEG3-MS

Benzyl-PEG3-MS is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 702701-70-0
  • MF: C14H22O6S
  • MW: 318.38600
  • Catalog: PROTAC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

N-(azide-PEG3)-N'-(m-PEG4)-Benzothiazole Cy5

N-(azide-PEG3)-N'-(m-PEG4)-Benzothiazole Cy5 is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 2107273-88-9
  • MF: C39H54ClN5O7S
  • MW: 772.39
  • Catalog: PROTAC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

HS-PEG7-CH2CH2N3

HS-PEG7-CH2CH2N3 is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 2148986-06-3
  • MF: C16H33N3O7S
  • MW: 411.51
  • Catalog: PROTAC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

N-Boc-PEG8-alcohol

N-Boc-PEG8-alcohol is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 1345337-22-5
  • MF: C21H43NO10
  • MW: 297.30376
  • Catalog: PROTAC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Alkynyl Palmitic Acid

Alkynyl Palmitic Acid is an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 99208-90-9
  • MF: C16H28O2
  • MW: 252.392
  • Catalog: PROTAC Linker
  • Density: 0.9±0.1 g/cm3
  • Boiling Point: 371.8±15.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 180.7±15.1 °C

Aminooxy-PEG4-alcohol

Aminooxy-PEG4-alcohol is a non-cleavable 4 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1]. Aminooxy-PEG4-alcohol is also a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[2].

  • CAS Number: 106492-60-8
  • MF: C8H19NO5
  • MW: 209.24000
  • Catalog: ADC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Azido-PEG1-CH2CO2-NHS

Azido-PEG1-CH2CO2-NHS is an alkyl/ether-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 1480545-09-2
  • MF: C8H10N4O5
  • MW: 242.19
  • Catalog: PROTAC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Boc-Hyp-OMe

Boc-Hyp-OMe is a non-cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs). Boc-Hyp-OMe is also a alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs[1][2].

  • CAS Number: 74844-91-0
  • MF: C11H19NO5
  • MW: 245.272
  • Catalog: ADC Linker
  • Density: 1.2±0.1 g/cm3
  • Boiling Point: 335.2±42.0 °C at 760 mmHg
  • Melting Point: 92-96 °C(lit.)
  • Flash Point: 156.6±27.9 °C

Mal-PEG6-Boc

Mal-PEG6-Boc is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 518044-37-6
  • MF: C23H39NO10
  • MW: 489.556
  • Catalog: PROTAC Linker
  • Density: 1.1±0.1 g/cm3
  • Boiling Point: 565.2±50.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 295.6±30.1 °C

t-Boc-Aminooxy-PEG3-amine

Boc-Aminooxy-PEG3-C2-NH2 is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 1235514-18-7
  • MF: C13H28N2O6
  • MW: 308.37
  • Catalog: PROTAC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Propargyl-PEG4-acid

Propargyl-PEG4-acid is a PEG-based PROTAC linker can be used in the synthesis of BTK-IAP PROTACs Ibrutinib (HY-10997)-based PROTAC 2 and an analogue PROTAC 3. PROTAC 3 causes BTK degradation with a DC50 of 200 nM in THP-1 cells[1].

  • CAS Number: 1415800-32-6
  • MF: C12H20O6
  • MW: 260.284
  • Catalog: PROTAC Linker
  • Density: 1.1±0.1 g/cm3
  • Boiling Point: 388.0±37.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 141.0±20.0 °C

Ald-Ph-amido-PEG2-C2-Boc

Ald-Ph-amido-PEG2-C2-Boc is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 1807521-09-0
  • MF: C19H27NO6
  • MW: 365.421
  • Catalog: PROTAC Linker
  • Density: 1.1±0.1 g/cm3
  • Boiling Point: 547.6±45.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 285.0±28.7 °C

Methyltetrazine-PEG5-alkyne

Methyltetrazine-PEG5-alkyne is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 1802907-97-6
  • MF: C20H26N4O5
  • MW: 402.444
  • Catalog: PROTAC Linker
  • Density: 1.2±0.1 g/cm3
  • Boiling Point: 568.5±60.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 198.5±23.1 °C

Bromoacetamido-PEG5-DOTA

Bromoacetamido-PEG5-DOTA is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 2353410-19-0
  • MF: C30H55BrN6O13
  • MW: 787.69
  • Catalog: PROTAC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

endo-BCN-O-PNB

endo-BCN-O-PNB is an alkyl/ether-based PROTAC linker that can be used in the synthesis of PROTACs[1].

  • CAS Number: 1263166-91-1
  • MF: C17H17NO5
  • MW: 315.32
  • Catalog: PROTAC Linker
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A