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Several medicinal substances are also prepared from aniline, for instance, antifebrin and atoxyl.

Antifebrin, another of the coal tar preparations, is the registered name for acetanelid.

It was soon ascertained that antipyrin, antifebrin, phenacetin and other analogous products, if given in sufficient doses, would reduce the heat, and allay the pains with great certainty and promptness, not only in continued fevers, but also in rheumatism, influenza, or la grippe, etc.; and thus their use soon became popular with both the profession and the public.

Anilides, compounds in which the amino group is substituted by an acid radical, are prepared by heating aniline with certain acids; antifebrin or acetanilide is thus obtained from acetic acid and aniline.

In addition to dyestuffs, it is a starting-product for the manufacture of many drugs, such as antipyrine, antifebrin, &c.