Used as a synthetic intermediate in organic chemistry for constructing complex heterocycles particularly in pharmaceutical synthesis and natural product analogs via Diels-Alder or Hantzsch reactions.

Serves as a functionalized dihydropyran scaffold for further derivatization leveraging the enol ether and ester functionalities for regioselective C-C or C-N bond formations in medicinal chemistry programs.

Methyl 6-methyl-34-dihydro-2H-pyran-5-carboxylate (CHO MW 156.18 gmol) is a partially saturated pyran ring derivative featuring a methyl substituent at position 6 and a methyl carboxylate ester at position 5 appearing as a colorless to pale yellow liquid with boiling point 211C and density 1.08 gmL.