Acetylides

eMolecules​ 1936643-30-9 | 3-aminobicyclo[1.1.1]pentane-1-carbonitrile | Pharmablock | MFCD30719357 | 108.144 | C6H8N2 | 97.000 | NC12CC(C1)(C2)C#N | 2.5g | 686934446

3-aminobicyclo[1.1.1]pentane-1-carbonitrile | Pharmablock | 1936643-30-9 | MFCD30719357 | 108.144 | C6H8N2 | 97.000 | NC12CC(C1)(C2)C#N | 2.5g | 686934446

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eMolecules​ 1066-54-2 | Ethynyltrimethylsilane | AA Blocks LLC | MFCD00008569 | 98.220 | C5H10Si | 0.000 | C[Si](C)(C)C#C | 100g | 410166968

Ethynyltrimethylsilane | AA Blocks LLC | 1066-54-2 | MFCD00008569 | 98.220 | C5H10Si | 0.000 | C[Si](C)(C)C#C | 100g | 410166968

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Medchemexpress LLC MEDCHEMEXPRESS LLC

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5000758187 PROPARGYL-PEG1-NH2 250MG

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eMolecules​ 1066-54-2 | Ethynyltrimethylsilane | AA Blocks LLC | MFCD00008569 | 98.220 | C5H10Si | 0.000 | C[Si](C)(C)C#C | 25g | 410166967

Ethynyltrimethylsilane | AA Blocks LLC | 1066-54-2 | MFCD00008569 | 98.220 | C5H10Si | 0.000 | C[Si](C)(C)C#C | 25g | 410166967

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Chemscene ChemScene | 2-Bromo-5-ethynylpyridine | 250MG | CS-0059696 | 0.98 | 569672-28-2| MFCD13189724 | 182.02

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ChemScene | 2-Bromo-5-ethynylpyridine | 250MG | CS-0059696 | 0.98 | 569672-28-2| MFCD13189724 | 182.02

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eMolecules​ 21020-27-9 | 4-METHYL-2-PENTYNE | AstaTech | MFCD00041615 | 82.146 | C6H10 | 95.000 | CC#CC(C)C | 0.25g | 718058629

4-METHYL-2-PENTYNE | AstaTech | 21020-27-9 | MFCD00041615 | 82.146 | C6H10 | 95.000 | CC#CC(C)C | 0.25g | 718058629

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eMolecules​ 916420-54-7 | 3-Methyl-5-(trifluoromethoxy)benzyl alcohol | Apollo Scientific | MFCD09025373 | 206.164 | C9H9F3O2 | 97.000 | Cc1cc(CO)cc(OC(F)(F)F)c1 | 5g | 562457352

3-Methyl-5-(trifluoromethoxy)benzyl alcohol | Apollo Scientific | 916420-54-7 | MFCD09025373 | 206.164 | C9H9F3O2 | 97.000 | Cc1cc(CO)cc(OC(F)(F)F)c1 | 5g | 562457352

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Medchemexpress LLC MEDCHEMEXPRESS LLC

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5000294923 S -VQW-765 10MG

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eMolecules​ 92136-39-5 | Boc-Propargylamine | Ambeed | MFCD07367245 | 155.197 | C8H13NO2 | 99.000 | CC(C)(C)OC(=O)NCC#C | 1g | 552613515

Boc-Propargylamine | Ambeed | 92136-39-5 | MFCD07367245 | 155.197 | C8H13NO2 | 99.000 | CC(C)(C)OC(=O)NCC#C | 1g | 552613515

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Matrix Scientific 4-ETHYNYLBENZOIC ACID4-ETHYN-1

4-ethynylbenzoic Acid Mf C9h6o2 Mw 146.15 Cas 10602-00-3 Mdl MFCD00168819

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eMolecules​ 86256-63-5 | 3-Methyl-5-(trifluoromethoxy)aniline | Apollo Scientific | MFCD09025380 | 191.153 | C8H8F3NO | 98.000 | Cc1cc(N)cc(OC(F)(F)F)c1 | 1g | 562453643

3-Methyl-5-(trifluoromethoxy)aniline | Apollo Scientific | 86256-63-5 | MFCD09025380 | 191.153 | C8H8F3NO | 98.000 | Cc1cc(N)cc(OC(F)(F)F)c1 | 1g | 562453643

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Medchemexpress LLC Tert-butyl N-(5-hydroxypentyl)carbamate | 75178-90-4 | MFCD01862955 | >97.0% | 203.28 g·mol⁻1 | C10H21NO3 | 1 G

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5-(Boc-amino)-1-pentanol is a Boc-protected 5-aminopentanol used as a versatile intermediate and linker in organic and medicinal chemistry. It contains a tert-butoxycarbonyl protected amine and a primary alcohol, enabling selective deprotection and further functionalization for synthesis of peptides, small molecules, and conjugates.

• Boc-protected amine enables selective deprotection workflows.
• Primary alcohol allows further derivatization and coupling reactions.
• High purity suitable for synthetic and medicinal chemistry applications.
• Defined storage stability in solvent and bulk formats.
• Useful as a linker for conjugation and building-block synthesis.

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Medchemexpress LLC Propargyl-PEG8-NHS ester | 2182601-74-5 | 95.0% | 533.57 g/mol | C24H39NO12 | 100 MG

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Propargyl-PEG8-NHS ester is a PEG-based linker and click-chemistry reagent containing a propargyl (alkyne) group and an N-hydroxysuccinimide (NHS) ester for amine coupling. It is intended for bioconjugation workflows including PROTAC and antibody-drug conjugate linker synthesis.

• Contains an alkyne (propargyl) group for copper-catalyzed azide-alkyne cycloaddition.
• Features an NHS ester for efficient coupling to primary amines.
• Molecular weight 533.57 g/mol and formula C24H39NO12.
• Typical purity 95.0%.
• Available in small research quantities (e.g., 100 MG) for bioconjugation studies.
• Recommended storage: pure form at -20°C to preserve stability.

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Medchemexpress LLC Propargyl-PEG8-bromide | 2055046-25-6 | 471.38 | C19H35BrO8 | 100 MG

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Propargyl-PEG8-bromide is a PEG-based linker reagent containing a terminal propargyl (alkyne) group and a terminal bromide. It is used for bioconjugation and linker synthesis, enabling copper-catalyzed azide-alkyne cycloaddition (CuAAC) and functioning as a non-cleavable ADC and PROTAC linker.

• Contains a terminal alkyne for copper-catalyzed azide-alkyne cycloaddition.
• Provides an eight-unit polyethylene glycol spacer for flexibility and solubility.
• Has a terminal bromide for nucleophilic substitution or further functionalization.
• Suitable for ADC and PROTAC linker synthesis and click chemistry applications.
• Available in small-scale laboratory quantities for research use.

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Medchemexpress LLC Propargyl-O-C1-amido-PEG4-C2-NHS ester | 2101206-92-0 | 95.0% | 458.46 g/mol | C20H30N2O10 | 10 MG

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Propargyl-O-C1-amido-PEG4-C2-NHS ester is a propargyl-functionalized PEG4 spacer bearing an N-hydroxysuccinimide (NHS) ester. It is used as a bioconjugation reagent for click-chemistry and linker construction, and is reactive toward primary amines. Store cold and dry to preserve NHS ester reactivity.

• Propargyl (alkyne) functional group for click chemistry.
• NHS ester reactive toward primary amines for conjugation.
• Four-unit PEG spacer for increased solubility and spacing.
• Molecular weight 458.46 g/mol.
• Purity 95.0%.
• Recommended storage: pure form at -20°C; in solvent at -80°C or -20°C.

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