(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids

organic compound that is an alkane or alkene or alkyne or their derivative

organic compound that has an alkyl group bound to a benzene ring

organic compound in which halogen atoms have been substituted for hydrogen atoms in an alkane

organic compounds containing an amino group and a carboxylic acid group