Halothane (trademarked as Fluothane) is an inhalational general anesthetic. Its IUPAC name is 2-bromo-2-chloro-1,1,1-trifluoroethane. It is the only inhalational anesthetic agent containing a bromine atom; there are several other halogenated anesthesia agents which lack the bromine atom and do contain the fluorine and chlorine atoms present in halothane. It is colorless and pleasant-smelling, but unstable in light. It is packaged in dark-colored bottles and contains 0.01% thymol as a stabilizing agent. Halothane is a core medicine in the World Health Organization's "Essential Drugs List", which is a list of minimum medical needs for a basic health care system. Its use in developed countries, however, has been almost entirely superseded by newer inhalational anaesthetic agents.

It is a potent anesthetic with a minimum alveolar concentration of 0.74. Its blood/gas partition coefficient of 2.4 makes it an agent with moderate induction and recovery time. It is not a good analgesic and its muscle relaxation effect is moderate.

The Hon. Sir Ashley Eden KCSI CIE (13 November 1831 – 8 July 1887) was an official and diplomat in British India.

Eden was the third son of Robert John Eden, 3rd Lord Auckland and bishop of Bath and Wells. His uncle was George Eden, 1st Earl of Auckland. He was born at Hertingfordbury in Hertfordshire, and educated first at Rugby and then at Winchester, until 1849, in which year he received a nomination to the Indian civil service. He spent 1850 and 1851 at the East India Company's college at Haileybury, but did not pass out last of his term until December 1851. In 1852 he reached India, and was first posted as assistant to the magistrate and collector of Rájsháhí.

In 1856 he was promoted to be magistrate at Moorshedábád, and during the Indian Mutiny he checked sympathy with the revolt in that city. In 1860 Eden was appointed secretary to the government of Bengal and an ex-officio member of the Bengal legislative council. This post he held for eleven years, during the last part of Sir John Peter Grant's lieutenant-governorship, and throughout Sir Cecil Beadon's and Sir William Grey's terms of office.