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chrysene [Supplementary Concept]
structure in Merck Index, 9th ed, #2252
Date introduced: August 26, 1981
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)
Phenanthrenes
POLYCYCLIC AROMATIC HYDROCARBONS composed of three fused BENZENE rings.
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.
Chrysenes
1,2-Benzphenanthrenes. POLYCYCLIC COMPOUNDS obtained from coal tar.
Year introduced: 1991(1976)