A benzoate ester resulting from the formal condensation of the carboxy group of 4-guanidinobenzoic acid with the hydroxy group of 2-(dimethylamino)-2-oxoethyl (4-hydroxyphenyl)acetate. It is a potent inhibitor of the human transmembrane protease serine 2 (TMPRSS2) and its mesylate salt is currently under investigation for its effectiveness in COVID-19 patients. ChEBI: Camostat is a benzoate ester resulting from the formal condensation of the carboxy group of 4-guanidinobenzoic acid with the hydroxy group of 2-(dimethylamino)-2-oxoethyl (4-hydroxyphenyl)acetate. It is a potent inhibitor of the human transmembrane protease serine 2 (TMPRSS2) and its mesylate salt is currently under investigation for its effectiveness in COVID-19 patients. It has a role as an anticoronaviral agent, a serine protease inhibitor, an antifibrinolytic drug, an anti-inflammatory agent, an antiviral agent, an antihypertensive agent and an antineoplastic agent. It is a tertiary carboxamide, a carboxylic ester, a diester, a member of guanidines and a benzoate ester. It is functionally related to a 4-guanidinobenzoic acid. It is a conjugate base of a camostat(1+).