Acetylides

1,3-Bis(2-propynyloxy)benzene 97.0+%, TCI America™

CAS: 26627-36-1 Molecular Formula: C12H10O2 Molecular Weight (g/mol): 186.21 MDL Number: MFCD00224312 InChI Key: HSRDPYWXTZGWFQ-UHFFFAOYSA-N Synonym: 1,3-Bis(propargyloxy)benzene PubChem CID: 11030523 IUPAC Name: 1,3-bis(prop-2-ynoxy)benzene SMILES: C#CCOC1=CC(=CC=C1)OCC#C

1,4-Bis(2-propynyloxy)benzene 98.0+%, TCI America™

CAS: 34596-36-6 Molecular Formula: C12H10O2 Molecular Weight (g/mol): 186.21 MDL Number: MFCD00224313 InChI Key: ODCQCPUUPWRQKV-UHFFFAOYSA-N Synonym: 1,4-Bis(propargyloxy)benzene PubChem CID: 12933255 IUPAC Name: 1,4-bis(prop-2-ynoxy)benzene SMILES: C#CCOC1=CC=C(C=C1)OCC#C

Medchemexpress LLC Propargyl-PEG4-amine 1g | 1013921-36-2 | 1 G

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Propargyl-PEG4-amine is an alkyne-functional tetraethylene glycol amine used as a linker for bioconjugation and PROTAC synthesis. It provides an alkyne handle for copper-catalyzed azide-alkyne cycloaddition and a terminal primary amine for further coupling reactions.

• Provides an alkyne handle for copper-catalyzed azide-alkyne cycloaddition (click chemistry).
• Contains a tetraethylene glycol spacer to improve solubility and flexibility.
• Offers a terminal primary amine for amide bond formation and other coupling chemistries.
• High purity suitable for synthesis and conjugation (99.7%).
• Molecular weight 231.29 g/mol; formula C11H21NO4.

Medchemexpress LLC Propargyl-PEG4-amine 5g | 1013921-36-2 | 5 G

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Small and/or specialty supplier based on Federal laws and SBA requirements.
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Propargyl-PEG4-amine is an alkyne-terminated PEG4 linker with a primary amine, used in PROTAC linker assembly, click chemistry, and bioconjugation workflows. It enables copper-catalyzed azide-alkyne cycloaddition (CuAAC) and amide bond formation for attaching payloads or linkers.

• Contains terminal alkyne for copper-catalyzed azide-alkyne cycloaddition (CuAAC).
• Primary amine enables amide coupling to activated carboxylic acids or NHS esters.
• Peg4 spacer provides flexibility and improved solubility in aqueous systems.
• Molecular weight 231.29 g/mol and formula C11H21NO4.
• High purity suitable for chemical biology and linker synthesis applications.