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N-methylpyrrolidone [Supplementary Concept]
Date introduced: August 18, 1983
Teratogens
An agent that causes the production of physical defects in the developing embryo.
Year introduced: 1975
Pyrrolidinones
A group of compounds that are derivatives of oxo-pyrrolidines. A member of this group is 2-oxo pyrrolidine, which is an intermediate in the manufacture of polyvinylpyrrolidone. (From Merck Index, 11th ed)
Year introduced: 1968
Pyrrolidines
Compounds also known as tetrahydropyridines with general molecular formula (CH2)4NH.
Year introduced: 1966
Heterocyclic Compounds, 1-Ring
Organic compounds that contain a ring structure made up of carbon and one or more additional elements such as nitrogen and oxygen.
Year introduced: 1998
Heterocyclic Compounds
Cyclic compounds that include atoms other than carbon in their ring structure.
Chemical Actions and Uses
A group of pharmacologic activities, effects on living systems and the environment, and modes of employment of drugs and chemicals. They are broken into actions, which describe their effects, and uses, which describe how they are employed.
Year introduced: 1999
Noxae
Agents capable of exerting a harmful effect on the body.
Toxic Actions
A broad category of chemical actions with harmful or deadly effect on living organisms.
Year introduced: 2004(1998)