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This is an index of lists of molecules (i.e. by year, number of atoms, etc.). Millions of molecules have existed in the universe since before the formation of Earth. Three of them, carbon dioxide, water and oxygen were necessary for the growth of life.
One major distinction is between natural and synthetic compounds. Organic compounds can also be classified or subdivided by the presence of heteroatoms, e.g., organometallic compounds, which feature bonds between carbon and a metal, and organophosphorus compounds, which feature bonds between carbon and a phosphorus. [citation needed]
The total number of unique species, including distinct ionization states, is indicated in each section header. Most of the molecules detected so far are organic. The only detected inorganic molecule with five or more atoms is SiH 4. [14] Molecules larger than that all have at least one carbon atom, with no N−N or O−O bonds. [14]
This page was last edited on 12 November 2022, at 14:29 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
In pharmacology, an important group of organic compounds is small molecules, also referred to as 'small organic compounds'. In this context, a small molecule is a small organic compound that is biologically active but is not a polymer. In practice, small molecules have a molar mass less than approximately 1000 g/mol.
An organic compound is any of a large class of chemical compounds whose molecules contain carbon, with the exception of carbides, carbonates, Cyanides and carbon oxides. Organic compounds are studied in organic chemistry ; many of them, such as proteins , fats , and carbohydrates ( sugars ), are also of prime importance in biochemistry .
List of compounds; List of organic compounds; List of proteins This page was last edited on 20 February 2025, at 00:04 (UTC). Text is available under the ...
Here is a sample molecule with the parent carbons numbered: For simplicity, here is an image of the same molecule, where the hydrogens in the parent chain are removed and the carbons are shown by their numbers: Now, following the above steps: The parent hydrocarbon chain has 23 carbons. It is called tricosa-.