This page discusses the vast number of known organic compounds, currently around 20 million and continually increasing. It defines organic compounds as carbon-based substances (excluding carbonates an...This page discusses the vast number of known organic compounds, currently around 20 million and continually increasing. It defines organic compounds as carbon-based substances (excluding carbonates and oxides) with intricate structures, highlighting carbon's unique bonding abilities. The page outlines the field of organic chemistry, which studies these compounds, and its intersection with biochemistry, which examines the chemistry of living systems, particularly biochemical compounds.