N-Methylmorpholine is the organic compound with the formula O(CH2CH2)2NCH3.

It is a cyclic tertiary amine.

It is used as a base catalyst for generation of polyurethanes and other reactions.

It is produced by the reaction of methylamine and diethylene glycol as well as by the hydrogenolysis of N-formylmorpholine.

[2] It is the precursor to N-methylmorpholine N-oxide, a commercially important oxidant.