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beta-lapachone [Supplementary Concept]
antineoplastic inhibitor of reverse transcriptase, DNA topoisomerase, and DNA polymerase
Date introduced: January 1, 1977
Anti-Infective Agents
Substances that prevent infectious agents or organisms from spreading or kill infectious agents in order to prevent the spread of infection.
Reverse Transcriptase Inhibitors
Inhibitors of reverse transcriptase (RNA-DIRECTED DNA POLYMERASE), an enzyme that synthesizes DNA on an RNA template.
Year introduced: 1996
Radiation-Sensitizing Agents
Drugs used to potentiate the effectiveness of radiation therapy in destroying unwanted cells.
Year introduced: 1966(1965)
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
Organic compounds that primarily contain carbon and hydrogen atoms with the carbon atoms forming a linear or circular structure.
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, Cyclic
Organic compounds composed exclusively of carbon and hydrogen forming a closed ring that may be either alicyclic or aromatic.
Naphthalenes
Two-ring crystalline hydrocarbons isolated from coal tar. They are used as intermediates in chemical synthesis, as insect repellents, fungicides, lubricants, preservatives, and, formerly, as topical antiseptics.
Naphthoquinones
Naphthalene rings which contain two ketone moieties in any position. They can be substituted in any position except at the ketone groups.
Polycyclic Compounds
Compounds which contain two or more rings in their structure.
Year introduced: 2005(1974)
Polycyclic Aromatic Hydrocarbons
Aromatic hydrocarbons that contain extended fused-ring structures.
Year introduced: 2017(1996)
Quinones
Hydrocarbon rings which contain two ketone moieties in any position. They can be substituted in any position except at the ketone groups.
Therapeutic Uses
Uses of chemicals which affect the course of conditions, diseases, syndromes or pathology to benefit the health of an individual.
Year introduced: 2004
Nucleic Acid Synthesis Inhibitors
Compounds that inhibit cell production of DNA or RNA.
Year introduced: 1997
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
Enzyme Inhibitors
Compounds or agents that combine with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction.
Year introduced: 1975(1964)
Antiviral Agents
Agents used in the prophylaxis or therapy of VIRUS DISEASES. Some of the ways they may act include preventing viral replication by inhibiting viral DNA polymerase; binding to specific cell-surface receptors and inhibiting viral penetration or uncoating; inhibiting viral protein synthesis; or blocking late stages of virus assembly.
Pharmacologic Actions
A broad category of chemical actions and uses that result in the prevention, treatment, cure or diagnosis of disease. Included here are drugs and chemicals that act by altering normal body functions, such as the REPRODUCTIVE CONTROL AGENTS and ANESTHETICS. Effects of chemicals on the environment are also included.
Year introduced: 2004(1999)
Molecular Mechanisms of Pharmacological Action
Pharmacological activities at the molecular level of DRUGS and other exogenous compounds that are used to treat DISEASES and affect normal BIOCHEMISTRY.
Year introduced: 2008(2004)