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Filtered Search Results
Medchemexpress LLC Biotin-PEG3-SS-azide | 2866429-93-6 | 99.6% | 692.91 | C27H48N8O7S3 | 10 MG
Biotin-PEG3-SS-azide is a cleavable three-unit polyethylene glycol linker bearing a biotin group and a terminal azide, designed for conjugation chemistry in research applications. It is suitable for click chemistry reactions and as a cleavable linker in the synthesis of antibody-drug conjugates.
- Cleavable disulfide linker provides intracellular release.
- Azide functionality enables CuAAC and strain-promoted cycloaddition.
- PEG3 spacer increases solubility and reduces steric hindrance.
- High purity supports reliable conjugation results.
- Soluble in DMSO at high concentration for in vitro use.
- Recommended storage at low temperature and protection from light to preserve stability.
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Medchemexpress LLC Tert-butyl 3-(2-(2-(2-azidoethoxy)ethoxy)ethoxy)propanoate | 252881-73-5 | 303.3547 g/mol | C13H25N3O5 | 50 MG
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N3-PEG3-CH2CH2-Boc is an azido-terminated PEG3 linker with a tert-butyl (Boc) protected carboxylic acid end, used as a cleavable PEG-based linker in antibody-drug conjugate and PROTAC synthesis, and as an azide reagent for click chemistry.
- Azide-terminated PEG3 linker suitable for click chemistry.
- tert-Butyl (Boc) protected carboxyl end for orthogonal deprotection.
- Used in ADC and PROTAC linker assembly.
- Available as a small pre-weighed laboratory pack for synthetic use.
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Medchemexpress LLC M-PEG5-acid | 81836-43-3 | MFCD20926398 | 95.0% | 280.31 g/mol | C12H24O7 | 1 G
m-PEG5-acid is a monomethylated polyethylene glycol (PEG) linker terminated with a carboxylic acid group, used as a short spacer in the synthesis of PROTACs and other bioconjugates. It provides a PEG5 (approximately five ethylene oxide units) spacer with a reactive carboxylic acid for standard coupling chemistries.
- Short monomethylated PEG5 spacer with terminal carboxylic acid.
- Useful as a linker in PROTAC and conjugate synthesis.
- Molecular weight ~280.31 g/mol and formula C12H24O7.
- Typical purity around 95.0%.
- Light yellow to light brown liquid; density ~1.107 g/cm3.
- Store sealed, away from moisture; use cold storage for solutions.
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Medchemexpress LLC Mal-PEG3-NH2 TFA | 2830214-77-0 | 99.1% | 386.32 g·mol⁻¹ | C14H21F3N2O7 | 10 MG
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Mal-PEG3-NH2 TFA is a linear heterobifunctional polyethylene glycol crosslinker supplied as the trifluoroacetic acid (TFA) salt. It contains a maleimide group at one end and a primary amine at the other, enabling selective conjugation to thiols and amines. It is provided as a non-degradable (non-cleavable) linker commonly used in PROTAC and ADC linker design and general bioconjugation.
- Maleimide and primary amine functional groups for thiol and amine conjugation.
- Non-degradable, non-cleavable linker suitable for PROTAC and ADC applications.
- High reported purity of 99.07%.
- Molecular weight 386.32 g·mol⁻¹.
- Available in multiple sizes including 5 mg, 10 mg, 25 mg, 50 mg, 100 mg, 200 mg.
- Supplied as the trifluoroacetic acid (TFA) salt.
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Medchemexpress LLC Trimethylammonium chloride-d9 | 18856-86-5 | MFCD00190508 | 99.7% | 104.63 g/mol | C3HD9ClN | 5mg
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Trimethylammonium chloride-d9 is the deuterium labeled Trimethylammonium chloride[1] Trimethylammonium chloride is an endogenous metabolite
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Medchemexpress LLC Azido-PEG3-SSPy | 98.6% | 344.45 g/mol | C13H20N4O3S2 | 25 MG
Azido-PEG3-SSPy is a cleavable three-unit polyethylene glycol (PEG) linker containing an azide functional group, designed for bioconjugation and antibody-drug conjugate (ADC) synthesis. It enables click chemistry (CuAAC) and strain-promoted azide-alkyne cycloadditions (SPAAC) for attachment to alkyne- or DBCO/BCN-containing molecules.
- Cleavable disulfide-containing PEG linker suitable for ADC construction.
- Azide-functionalized for copper-catalyzed azide-alkyne cycloaddition (CuAAC).
- Compatible with strain-promoted alkyne-azide cycloaddition (SPAAC) with DBCO or BCN.
- Supplied as a colorless to light yellow liquid with high purity.
- Suitable for bioconjugation and linker development in drug conjugates.
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Medchemexpress LLC 3,5-diethoxycarbonyl-1,4-dihydro-2,4,6-collidine | 632-93-9 | MFCD00005950 | >98.0% | 267.33 g·mol⁻¹ | C14H21NO4 | 1 G
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Diethyl 1,4-dihydro-2,4,6-trimethyl-3,5-pyridinedicarboxylate (CAS 632-93-9) is a diethoxycarbonyl-substituted dihydropyridine used as a research reagent that interferes with heme synthesis and is employed in studies of porphyrin metabolism and ferrochelatase activity.
- High purity: >98.0% (GC).
- Chemical formula C14H21NO4; molecular weight 267.33 g·mol⁻¹.
- Available in gram-scale quantities (1 G, 5 G, 25 G).
- Used as a biochemical tool to block heme synthesis in cellular and in vivo studies.
- Solid with reported melting point 130-132 °C for handling and storage considerations.
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eMolecules AstaTech / DIMETHYLETHOXYSILANE / 5g / 491175710 / I11477 / 95.000 / 14857-34-2 / MFCD00026750 / 104.224 / C4H12OSi
AstaTech / DIMETHYLETHOXYSILANE / 5g / 491175710 / I11477 / 95.000 / 14857-34-2 / MFCD00026750 / 104.224 / C4H12OSi
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Medchemexpress LLC Trimethylammonium chloride-13C3 | 286013-00-1 | 98.0% | 98.55 | 13C3H10ClN | 5 MG
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Trimethylammonium chloride-13C3 is the carbon-13-labeled form of trimethylammonium chloride, supplied as a research-grade analytical standard for use as an internal standard, tracer, or reference in mass spectrometry and metabolic studies. The material is provided in a small, accurately measured quantity suitable for analytical workflows.
- Isotopically labeled (13C3) for reliable mass spectrometry quantitation.
- Suitable as a tracer in metabolic and analytical studies.
- Supplied as a 5 mg vial for analytical applications.
- Reported molecular weight 98.55 for calculation and method development.
- High reported purity (98.0%) supporting analytical accuracy.
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Medchemexpress LLC (S,R,S)-AHPC-PEG3-NH2 hydrochloride | 2097971-11-2 | MFCD31656714 | 99.0% | 656.23 g/mol | C30H46ClN5O7S | 500 MG
(S,R,S)-AHPC-PEG3-NH2 hydrochloride is an E3 ligase ligand-linker conjugate that combines an (S,R,S)-AHPC-based VHL ligand with a three-unit polyethylene glycol (PEG3) linker terminating in a primary amine. It is supplied as the hydrochloride salt and is used as a building block in PROTAC synthesis and other chemical biology applications.
- E3 ligase VHL ligand-linker conjugate for targeted protein degradation research.
- PEG3 linker with terminal primary amine suitable for conjugation.
- Hydrochloride salt form for improved stability and handling.
- High purity (≈99%) suitable for synthetic applications.
- Available in multiple preweighed sizes including 500 MG.
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Medchemexpress LLC Trimethylamine hydrochloride | 593-81-7 | MFCD00012478 | 95.57 | C3H10ClN | 10g
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
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Small and/or specialty supplier based on Federal laws and SBA requirements.
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Trimethylammonium chlorideIt is an endogenous metabolite that inhibits deacetylation Trimethylammonium chlorideIs a non-competitive inhibitor of acetylcholinesterase[1][2]
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
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eMolecules 3 4-DIMETHOXY-3-CYCLOBUTENE 1G
5000225827 3 4-DIMETHOXY-3-CYCLOBUTENE 1G
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
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AA BLOCKS LLC SILANE DIMETHYL-2-PROPEN-100G
NC3362581 SILANE DIMETHYL-2-PROPEN-100G
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
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eMolecules Chem-Impex tert-Butyldimethylsilyl chloride 1kg 112440257 00614 0 000 18162-48-6 MFCD00000501 150 720 C6H15ClSi
Chem-Impex tert-Butyldimethylsilyl chloride 1kg 112440257 00614 0 000 18162-48-6 MFCD00000501 150 720 C6H15ClSi
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
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Medchemexpress LLC Trimethylamine hydrochloride | 593-81-7 | MFCD00012478 | 95.57 g/mol | C3H10ClN | 100mg
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
Small and/or specialty supplier based on Federal laws and SBA requirements.
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Trimethylammonium chloride (Standard) is the analytical standard of Trimethylammonium chloride This product is intended for research and analytical applications Trimethylammonium chlorideIt is an endogenous metabolite that inhibits deacetylation Trimethylammonium chlorideIs a non-competitive inhibitor of acetylcholinesterase[1][2]
Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More