A class of organic compounds made of carbon, hydrogen, and oxygen that are a major source of energy for living things

organic compound; a general term for carbon-containing compounds (excluding simple ones like carbon monoxide and carbon dioxide)

Any organic compound consisting entirely of hydrogen and carbon, such as those found in petroleum and natural gas; also called [[烃|烴|ting1]].

Chemical compounds that generally do not contain carbon; also includes simple carbon-containing compounds like carbon dioxide

A general term for chemical compounds composed of nitrogen and oxygen, such as nitric oxide and nitrogen dioxide. These toxic pollutants contribute to smog, reduce visibility, and cause respiratory irritation.

steroid compound

any of a class of chemical compounds, such as benzene, that contain one or more rings of atoms

chemical compounds consisting of a hydroxyl group bonded directly to an aromatic hydrocarbon group

A high-molecular-weight organic compound composed of repeating structural units, including natural examples like proteins and starch, or synthetic ones like plastics and rubber.

A chemical compound that can react as both an acid and a base

flavonoid (chemistry)

chemical compound containing two sulfur atoms per molecule

a large molecule or macromolecular compound composed of many repeated subunits

chemical compound consisting of carbon, chlorine, and fluorine, commonly used as refrigerants and aerosol propellants

carbamate; any of a class of organic compounds derived from carbamic acid