Tilorone is a member of the class of fluoren-9-ones that is 9H-fluoren-9-one which is substituted by a 2-(diethylamino)ethoxy group at positions 2 and 7. It is an interferon inducer and a selective alpha7 nicotinic acetylcholine receptor (alpha7 nAChR) agonist. Its hydrochloride salt is used as an antiviral drug. It has a role as an antiviral agent, an antineoplastic agent, an interferon inducer, an EC 3.1.1.7 (acetylcholinesterase) inhibitor, a nicotinic acetylcholine receptor agonist and an anti-inflammatory agent. It is a member of fluoren-9-ones, an aromatic ether, a diether and a tertiary amino compound. It is a conjugate base of a tilorone(2+).