Kairine is a derivative of tetrahydroquinoline which was first described by Wilhelm Fischer in 1883.

Its name comes from the Greek kairos, meaning "the right time".

[1] It is an antipyretic, formerly used against typhoid fever, but now largely obsolete due to severe side effects.

Both kairine and its N-ethyl homolog show similar antipyretic activity.

[2][3][4][5] This article about a heterocyclic compound is a stub.