Methylamine. Computer model of a molecule of the organic compound methylamine (C.H5.N). The atoms (balls) are colour-coded: carbon (brown), hydrogen (white) and nitrogen (blue). Tubes join the balls, representing the bonds between the atoms. Amines are organic compounds derived from ammonia and a hydrocarbon group. This is a simple amine with a methyl hydrocarbon group containing one carbon atom. Methylamine, like all simple amines, has a fishy smell. Amines have many uses, including insecticides, dyes, drugs and rust inhibitors.