Warning: The NCBI web site requires JavaScript to function. more...
An official website of the United States government
The .gov means it's official. Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you're on a federal government site.
The site is secure. The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.
versicolorin A [Supplementary Concept]
see also versicolorin
Date introduced: June 10, 1981
Quinones
Hydrocarbon rings which contain two ketone moieties in any position. They can be substituted in any position except at the ketone groups.
Polycyclic Aromatic Hydrocarbons
Aromatic hydrocarbons that contain extended fused-ring structures.
Year introduced: 2017(1996)
Polycyclic Compounds
Compounds which contain two or more rings in their structure.
Year introduced: 2005(1974)
Organic Chemicals
A broad class of substances containing carbon and its derivatives. Many of these chemicals will frequently contain hydrogen with or without oxygen, nitrogen, sulfur, phosphorus, and other elements. They exist in either carbon chain or carbon ring form.
Year introduced: 1998
Hydrocarbons, Cyclic
Organic compounds composed exclusively of carbon and hydrogen forming a closed ring that may be either alicyclic or aromatic.
Hydrocarbons, Aromatic
Organic compounds containing carbon and hydrogen in the form of an unsaturated, usually hexagonal ring structure. The compounds can be single ring, or double, triple, or multiple fused rings.
Hydrocarbons
Organic compounds that primarily contain carbon and hydrogen atoms with the carbon atoms forming a linear or circular structure.
Anthraquinones
Compounds based on ANTHRACENES which contain two KETONES in any position. Substitutions can be in any position except on the ketone groups.
Year introduced: 1966
Anthracenes
A group of compounds with three aromatic rings joined in linear arrangement.
Anthrones
Anthracenes with one ketone group, typically 9,10-dihydroanthracene carrying an oxo group at C-9.
Year introduced: 2024