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Sir James Young Simpson, a Scottish physician, discovers the anaesthetic properties of chloroform.

Historical image related to Sir James Young Simpson, a Scottish physician, discovers the anaesthetic properties of chloroform. from November 4, 1847

James Young Simpson

Scottish obstetrician (1811–1870)

Sir James Young Simpson, 1st Baronet was a Scottish obstetrician and a significant figure in the history of medicine. He was the first physician to demonstrate the anaesthetic properties of chloroform in humans and helped to popularize its use in medicine.
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Anesthetic

Drug that causes anesthesia

An anesthetic or anaesthetic is a drug used to induce anesthesia ⁠— ⁠in other words, to result in a temporary loss of sensation or awareness. They may be divided into two broad classes: general anesthetics, which result in a reversible loss of consciousness, and local…
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Chloroform

CHCl3, historical anaesthetic and common solvent

Chloroform, or trichloromethane, is an organochloride with the formula CHCl3 and a common solvent. It is a volatile, colorless, sweet-smelling, dense liquid produced on a large scale as a precursor to refrigerants and polytetrafluoroethylene (PTFE). Chloroform was once used as…
Source: Wikipedia (CC BY-SA)