Methyl propiolate is an organic compound with the formula HC2CO2CH3.

It is the methyl ester of propiolic acid, the simplest acetylenic carboxylic acid.

It is a colorless liquid that is miscible with organic solvents.

The compound is a reagent and building block for the synthesis of other organic compounds, reactions that exploit the electrophilicity of the alkyne group.

[2] It has been widely evaluated as a precursor to heterocycles.