What is "dimethylurea"

n. (context organic compound English) Any derivative of urea in which two hydrogen atoms have been replaced by methyl groups, but especially ''1,3-dimethylurea'' that acts as a radical scavenger, and is used in the manufacture of caffeine and other compounds

Dimethylurea (DMU) ( IUPAC systematic name: '''1,3-Dimethylurea ''') is a urea derivative and used as an intermediate in organic synthesis. It is a colorless crystalline powder with little toxicity.