a compound derived from ammonia by replacing hydrogen atoms by univalent hydrocarbon radicals

any substance that causes injury or illness or death of a living organism

oily poisonous liquid amine obtained from nitrobenzene and used to make dyes and plastics and medicines

a colorless flammable liquid obtained from petroleum or coal tar; used as a solvent for gums and lacquers and in high-octane fuels

a cyclic group of atoms with the formula C6H5.