Azolines
Medchemexpress LLC m-PEG-thiol | 134874-49-0 | MFCD21363241 | 90.0% | 750 Da (average) | (C2H4O)nC3H8OS | 500 MG
m-PEG-thiol (MW 750) is a methoxy-terminated polyethylene glycol with a terminal thiol group used for bioconjugation and surface modification. It provides a hydrophilic spacer for attaching biomolecules and for stabilizing or functionalizing metal nanoparticles via thiol-metal chemistry.
- Average molecular weight 750 Da.
- Thiol-terminated methoxy polyethylene glycol for surface attachment.
- Suitable for DNA thiolation and gold nanoparticle functionalization.
- Purity 90.0%.
- Liquid, colorless to light yellow; store cold (pure form -20°C) to preserve stability.
Medchemexpress LLC m-PEG-thiol | 134874-49-0 | MFCD00803682 | 90.0% | 750 (average) | (C2H4O)nC3H8OS | 250 MG
m-PEG-thiol (average MW 750) is a methoxy-terminated polyethylene glycol bearing a terminal thiol group, supplied as a solid reagent for bioconjugation and nanoparticle surface functionalization. It is commonly used to thiolate DNA and to anchor polymers or biomolecules onto gold and other metal surfaces via thiol-gold chemistry, supporting applications in nanostructure assembly, biosensing, and drug delivery.
- Provides terminal thiol for covalent attachment to metal surfaces and thiol-reactive chemistries.
- Average molecular weight 750 for a short PEG spacer length.
- Supplied as a solid suitable for solution-phase conjugation.
- Reported purity approximately 90%.
- Compatible with DNA thiolation and nanoparticle surface modification protocols.
Medchemexpress LLC Thiol-PEG-CH2COOH (MW 2000) | 95.0% | 100 MG
Thiol-PEG-CH2COOH (MW 2000) is a PEG-based PROTAC linker that can be used in the synthesis 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.
- PEG-based PROTAC linker
- Used in the synthesis of PROTACs
- Exploits the intracellular ubiquitin-proteasome system
- Selectively degrades target proteins
Medchemexpress LLC Methoxy polyethylene glycol thiol | 134874-49-0 | MFCD00084534 | 90.0% | 750 (average) | (C2H4O)nC3H8OS | 100 MG
m-PEG-thiol (MW 750) is a methoxy-terminated polyethylene glycol with a thiol (-SH) end group used to introduce thiol functionality onto biomolecules and surfaces. It facilitates conjugation to gold and other thiol-reactive substrates for nanoparticle functionalization and bioconjugation. The material has an average molecular weight of 750 and a typical purity of 90.0%.
- Thiol-terminated for efficient conjugation to gold and thiol-reactive chemistries.
- Average molecular weight 750 for predictable steric and solubility properties.
- Useful for DNA thiolation and nanoparticle surface modification.
- Solid form suitable for small-scale reactions and surface treatments.
- Available in a 100 MG pack for laboratory-scale use.
Biotium Antibody Labeling Kits Antibody and Protein Labeling Kits Mix n Stain Antibody Labeling Kits CF740 1/EA
Mix-n-Stain CF Dye Nanobody Thiol Labeling Kits are optimized for labeling nanobodies with bright and photostable CF dyes in 2 hours with no purification Kits tolerate common stabilizers Near-IR CF740 dye has Ex/Em at 742/767 nm One labeling of 5-20 ug Nanobody Thiol per kit
Medchemexpress LLC Thiol-PEG6-alcohol | 194425-46-2 | ≥97.0% | 50 MG
Thiol-PEG6-alcohol is a PEG-based PROTAC linker used in the synthesis of PROTACs. PROTACs are molecules containing two different ligands connected by a linker, where one ligand targets an E3 ubiquitin ligase and the other targets a specific protein. They function by exploiting the intracellular ubiquitin-proteasome system to selectively degrade target proteins.
- PEG-based PROTAC linker
- Used in the synthesis of PROTACs
- Leverages the intracellular ubiquitin-proteasome system
- Selectively degrades target proteins
Medchemexpress LLC Thiol-PEG-CH2COOH (MW 5000) | 95.0% | SMILES: SCCOCC(O)=O.[MW 5000].[n] | 50 MG
Thiol-PEG-CH2COOH (MW 5000) is a PEG-based PROTAC linker used in the synthesis of PROTACs. PROTACs are composed of two distinct ligands connected by a linker, one targeting an E3 ubiquitin ligase and the other targeting the protein intended for degradation, leveraging the intracellular ubiquitin-proteasome system for selective protein degradation.
- PEG-based PROTAC linker
- Utilized in the synthesis of PROTACs
- Leverages the intracellular ubiquitin-proteasome system
- Enables selective degradation of target proteins
Medchemexpress LLC M-PEG-thiol | 134874-49-0 | MFCD21363241 | 98.7% | 1000 (average) | (C2H4O)nC3H8OS | 100 MG
m-PEG-thiol (MW 1000) is a methoxy-terminated polyethylene glycol with a terminal thiol group used for surface modification and bioconjugation. The thiol enables covalent attachment to metal and nanoparticle surfaces, while the PEG chain provides steric stabilization and improves solubility and biocompatibility.
- Methoxy-terminated PEG with a terminal thiol functional group.
- Average molecular weight 1000 for predictable spacer length.
- Enables covalent attachment to gold and other metal surfaces.
- Provides steric stabilization and reduces nanoparticle aggregation.
- Suitable for bioconjugation of DNA, proteins, and antibodies.
- Supplied as a solid in a 100 mg unit with purity ~98.7%.
- Store protected from light; follow recommended cold storage for solutions.
Medchemexpress LLC M-PEG-thiol (MW 2000) | 134874-49-0 | >98.0% | COCCOCCS.[MW 2000].[n] | 250 MG
M-PEG-thiol (MW 2000) is a PEG-based PROTAC linker designed for research use only, specifically in the synthesis of PROTACs. It presents as a white to yellow solid with an average molecular weight of 2000.
- PEG-based PROTAC linker
- For research use only
- White to yellow solid appearance
- Average molecular weight of 2000
- Can be used in the synthesis of PROTACs
Medchemexpress LLC m-PEG-thiol (MW 5000) | 88778-21-6 | 99.9% | 1 G
m-PEG-thiol (MW 5000) is a PEG-based PROTAC linker designed for the synthesis of PROTACs. This product functions by exploiting the intracellular ubiquitin-proteasome system to selectively degrade target proteins.
- PEG-based PROTAC linker
- Used in the synthesis of PROTACs
- Exploits the intracellular ubiquitin-proteasome system
- Selectively degrades target proteins
- For research use only
- Purity 99.9%
- Molecular weight 5000 (Average)
Medchemexpress LLC M-PEG-thiol | 134874-49-0 | MFCD21363241 | 99.0% | 550 (average) g/mol | (C2H4O)nC3H8OS | 100 MG
m-PEG-thiol (MW 550) is a methoxy-terminated polyethylene glycol with a terminal thiol group. It is supplied as a research-grade reagent for introducing thiol functionality to biomolecules or surfaces, commonly used for conjugation to gold nanoparticles and in bioconjugation chemistry. The product has an average molecular weight of 550 and is supplied with high purity for research applications.
- Provides a thiol functional group for covalent conjugation to maleimides and gold surfaces.
- Suitable for DNA thiolation and assembly of gold nanorod constructs.
- Supplied at research-grade purity for reproducible experimental results.
- Soluble in DMSO (200 mg/mL with sonication) for convenient stock preparation.
- Average molecular weight of 550 for consistent PEGylation behavior.
eMolecules 92806-98-9 | 6-Hydroxy-2-mercaptobenzimidazole | MFCD26131865 | 1g
WuXi ChemSupply | 6-Hydroxy-2-mercaptobenzimidazole | 1g | 599167443 | LN01286296 | 95.000 | 92806-98-9 | MFCD26131865 | 166.200 | C7H6N2OS
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Medchemexpress LLC 2,4-Dimethyl-1H-imidazole-5-carbaldehyde | 68282-52-0 | 99.9% | C6H8N2O | 250 MG
2,4-Dimethyl-1H-imidazole-5-carbaldehyde is a drug intermediate for the synthesis of various active compounds.
- Solid appearance
- Light yellow to yellow color
- Molecular weight: 124.14
- Store at -20°C, sealed, away from moisture
- In solvent, store at -80°C for 6 months or -20°C for 1 month (sealed storage, away from moisture)
- Shipping at room temperature (continental US)
Medchemexpress LLC m-PEG7-thiol | 651042-82-9 | 99.9% | 356.48 g/mol | C15H32O7S | 1 G
Thiol-terminated polyethylene glycol (PEG) linker suitable for use as a flexible, hydrophilic spacer in the synthesis of PROTACs and other bioconjugates. Provides a terminal thiol for selective thiol-reactive coupling and is supplied with supporting analytical and safety documentation.
- Thiol-terminated PEG linker
- Average molecular weight 356.48 g/mol
- High purity: 99.9%
- Available in 1 G and other pack sizes
- Used for PROTAC synthesis and thiol-based conjugation
- COA and SDS available for quality and safety information
Medchemexpress LLC M-PEG-thiol (MW 2000) | 134874-49-0 | 99.8% | 100 MG
M-PEG-thiol (MW 2000) is a PEG-based PROTAC linker used in the synthesis of PROTACs. This product has an average molecular weight of 2000 and a high purity of 99.8%.
- Appears as a white to yellow solid
- Store at 4°C under nitrogen
- In solvent, store at -80°C for 6 months or -20°C for 1 month under nitrogen
- Can be shipped at room temperature in the continental US