Pentylenetetrazol
Chemical compound / From Wikipedia, the free encyclopedia
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Pentylenetetrazol, also known as pentylenetetrazole, leptazol, metrazol, pentetrazol (INN), pentamethylenetetrazol, Corazol, Cardiazol, Deumacard, or PTZ, is a drug formerly used as a circulatory and respiratory stimulant. High doses cause convulsions, as discovered by Hungarian-American neurologist and psychiatrist Ladislas J. Meduna in 1934. It has been used in convulsive therapy, and was found to be effective—primarily for depression—but side effects such as uncontrolled seizures were difficult to avoid.[1] In 1939, pentylenetetrazol was replaced by electroconvulsive therapy, which is easier to administer, as the preferred method for inducing seizures in England's mental hospitals. In the US, its approval by the Food and Drug Administration was revoked in 1982.[2] It is used in Italy as a cardio-respiratory stimulant in combination with codeine in a cough suppressant drug.[3]
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Trade names | Metrazol, others |
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ECHA InfoCard | 100.000.200 |
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Formula | C6H10N4 |
Molar mass | 138.174 g·mol−1 |
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