Acetylides

1-Tetradecyne, tech. 90%

CAS: 765-10-6 Molecular Formula: C14H26 Molecular Weight (g/mol): 194.362 MDL Number: MFCD00015076 InChI Key: DZEFNRWGWQDGTR-UHFFFAOYSA-N Synonym: 1-tetradecyne,tetradecyne,tetradec-1-in,acmc-1bfxn PubChem CID: 69823 IUPAC Name: tetradec-1-yne SMILES: CCCCCCCCCCCCC#C

4-Ethynylaniline 98.0+%, TCI America™

CAS: 14235-81-5 Molecular Formula: C8H7N Molecular Weight (g/mol): 117.151 MDL Number: MFCD00168824 InChI Key: JXYITCJMBRETQX-UHFFFAOYSA-N Synonym: 4-aminophenylacetylene,4-ethynyl aniline,benzenamine, 4-ethynyl,p-aminophenylacetylene,1-amino-4-ethynylbenzene,4-aminophenyl acetylene,p-ethynylaniline,4-ethynylaniline,4-ethynyl-phenylamine,p-aminophenyl-acetylene PubChem CID: 3760025 IUPAC Name: 4-ethynylaniline SMILES: C#CC1=CC=C(C=C1)N

N,N-Dipropargyl-p-toluenesulfonamide 98.0+%, TCI America™

CAS: 18773-54-1 Molecular Formula: C13H13NO2S Molecular Weight (g/mol): 247.312 InChI Key: NNPRNGRENISUMK-UHFFFAOYSA-N PubChem CID: 329147 IUPAC Name: 4-methyl-N,N-bis(prop-2-ynyl)benzenesulfonamide SMILES: CC1=CC=C(C=C1)S(=O)(=O)N(CC#C)CC#C

3-Butyn-1-ol, 98%

CAS: 927-74-2 Molecular Formula: C4H6O Molecular Weight (g/mol): 70.091 MDL Number: MFCD00002955 InChI Key: OTJZCIYGRUNXTP-UHFFFAOYSA-N Synonym: 3-butyn-1-ol,3-butynol,3-butyne-1-ol,4-hydroxy-1-butyne,3-butynyl alcohol,1-butyn-4-ol,2-hydroxyethylacetylene,homopropargyl alcohol,2-hydroxyethyl acetylene,4-hydroxy-butyne PubChem CID: 13566 ChEBI: CHEBI:27444 IUPAC Name: but-3-yn-1-ol SMILES: C#CCCO

1-Octyne, 98%

CAS: 629-05-0 Molecular Formula: C8H14 Molecular Weight (g/mol): 110.20 MDL Number: MFCD00009546 InChI Key: UMIPWJGWASORKV-UHFFFAOYSA-N Synonym: 1-octyne,hexylacetylene,octyne-1,n-octyne,hex-1-yl acetylene,pubchem13059,acmc-209na4,4-01-00-01034 beilstein handbook reference,1-octyne 10g PubChem CID: 12370 IUPAC Name: oct-1-yne SMILES: CCCCCCC#C

1-Heptyne, 99%

CAS: 628-71-7 Molecular Formula: C7H12 Molecular Weight (g/mol): 96.173 MDL Number: MFCD00009529 InChI Key: YVXHZKKCZYLQOP-UHFFFAOYSA-N Synonym: 1-heptyne,amylacetylene,heptyne,unii-z3nf9ssh6k,z3nf9ssh6k,amyl acetylene,n-pentylacetylene,pubchem13058,acmc-1aw2o PubChem CID: 12350 IUPAC Name: hept-1-yne SMILES: CCCCCC#C

1-Hexyne, 98+%

CAS: 693-02-7 Molecular Formula: C6H10 Molecular Weight (g/mol): 82.146 MDL Number: MFCD00009504 InChI Key: CGHIBGNXEGJPQZ-UHFFFAOYSA-N Synonym: 1-hexyne,n-butylacetylene,butylacetylene,hexyne,unii-5fzf2f38f5,n-hexyne,1-hexyn,hex-5-yn-1-yl,pubchem13057 PubChem CID: 12732 IUPAC Name: hex-1-yne SMILES: CCCCC#C

4-Methyl-1-pentyne, 97%

CAS: 7154-75-8 Molecular Formula: C6H10 Molecular Weight (g/mol): 82.15 MDL Number: MFCD00039857 InChI Key: OXRWICUICBZVAE-UHFFFAOYSA-N Synonym: 4-methyl-1-pentyne,1-pentyne, 4-methyl,isobutylacetylene,isobutylethyne,4-methylpentine,4-methylpentyne,4-methyl pentyne,isobutyl acetylene,4-methyl-pentyne,4-methyl-pent-1-yne PubChem CID: 138948 IUPAC Name: 4-methylpent-1-yne SMILES: CC(C)CC#C

Trimethylsilylacetylene, 98%

CAS: 1066-54-2 Molecular Formula: C5H10Si Molecular Weight (g/mol): 98.22 MDL Number: MFCD00008569 InChI Key: CWMFRHBXRUITQE-UHFFFAOYSA-N Synonym: trimethylsilylacetylene,trimethylsilyl acetylene,silane, ethynyltrimethyl,ethynyl-trimethyl-silane,ethynyl trimethyl silane,tms acetylene,ethynyltrimethyl silane,trimethylsilyl-acetylene,tmsacetylene PubChem CID: 66111 IUPAC Name: ethynyl(trimethyl)silane SMILES: C[Si](C)(C)C#C

Medchemexpress LLC Ethanamine, 2-[2-(2-propyn-1-yloxy)ethoxy]- | 944561-44-8 | MFCD19160595 | 99.6% | 143.18 g/mol | C7H13NO2 | 250 MG

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Propargyl-PEG2-amine is a PEG-based propargyl-functionalized amine used as a short spacer linker for bioconjugation. It provides a terminal alkyne for click chemistry and a primary amine for conjugation, making it suitable for linker synthesis and medicinal chemistry research.

• Short PEG2 spacer with terminal alkyne for click chemistry.
• Primary amine for facile conjugation to activated esters and similar chemistries.
• High purity suitable for research-grade applications.
• Compact 250 MG packaging for laboratory-scale experiments.
• Soluble in common organic solvents used in synthesis and bioconjugation.

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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 3,6,9,12,15,18,21-Heptaoxatetracos-23-yn-1-ol | 1422023-54-8 | ≥97.0% | 250 MG

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Propargyl-PEG7-alcohol is a chemical compound identified by CAS number 1422023-54-8. It has a molecular formula of C17H32O8 and a molecular weight of 364.43. This compound is typically found as a colorless to light yellow liquid, with a purity of ≥97.0%. It is intended for research use only.

• Molecular formula: C17H32O8
• Molecular weight: 364.43
• Purity: ≥97.0%
• Appearance: colorless to light yellow liquid
• Storage for pure form: 3 years at -20°C, 2 years at 4°C
• Storage in solvent: 6 months at -80°C, 1 month at -20°C

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Enzo Life Sciences R(-)-Deprenyl. HCl (100mg). CAS: 14611-52-0

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Deprenyl inhibits apoptosis and displays neuroprotective effects in a variety of in vitro and in vivo systems. In vivo it rescues nigral dopaminergic neurons after systemic MPTP treatment. In vitro it rescues PC12 cells from apoptotic cell death induced by trophic withdrawal. The putative target responsible for the anti-apoptotic effects is glyceraldehyde-3-phosphate dehydrogenase. Deprenyl also inhibits monoamine oxidase-B, which is not involved in its anti-apoptotic mechanism. Parkinson’s disease therapeutic. Alternative name: Selegiline hydrochloride. Purity: ≥98% (HPLC). Solubility: Soluble in water. Long Term Storage: Ambient.

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Medchemexpress LLC Propargyl-PEG3-OCH2-Boc | 888010-02-4 | >95.0% | 302.36 g/mol | C15H26O6 | 5 MG

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Propargyl-PEG3-OCH2-Boc is a Boc-protected PEG3 linker bearing a terminal propargyl (alkyne) group. It is a click-chemistry building block used for copper-catalyzed azide-alkyne cycloaddition (CuAAC) and is commonly applied in PROTAC synthesis, bioconjugation, and small-molecule linker assembly. The PEG3 spacer improves solubility and provides flexibility for efficient conjugation.

• Boc-protected terminal alkyne suitable for CuAAC click reactions.
• Three-unit PEG spacer enhances solubility and conformational flexibility.
• Suitable for PROTAC linker synthesis and general bioconjugation.
• Compatible with common organic solvents such as DMSO and DMF.
• Available in research-scale quantities for synthesis and optimization.

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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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