Methyl but-3-ynoate

• CAT Number: L012620
• CAS Number: 32804-66-3
• Molecular Formula: C5H6O2
• Molecular Weight: 98.10
• Purity: ≥95%
• IUPAC Name: methyl but-3-ynoate
• InChI: InChI=1S/C5H6O2/c1-3-4-5(6)7-2/h1H,4H2,2H3
• InChIKey: JGEGAAGXXWDCOJ-UHFFFAOYSA-N
• SMILES: COC(=O)CC#C

Methyl but-3-ynoate（Cat No.:L012620）is a linear alkyne ester with the molecular formula C₅H₆O₂, featuring a terminal alkyne group at the 3-position and a methyl ester at the 1-position. This bifunctional molecule is widely used as a synthetic intermediate in organic chemistry, particularly in the preparation of heterocycles, pharmaceuticals, and polymer precursors. The terminal alkyne allows for versatile transformations such as click chemistry, Sonogashira coupling, and cycloadditions, while the ester group offers reactivity in hydrolysis, transesterification, or amidation reactions. Its compact structure and reactivity make it valuable in building complex molecular frameworks.