chemical inhibits in vitro invasion of virus guanidines nafamostat methanesulfonate KEGG:D01670 539.585 0 Futhan C19H19N5O2.2CH3O3S Nafamostat mesilate Nafamostat mesylate (TN) PMID: 32020029 6-Amidino-2-naphthyl 4-guanidinobenzoate dimethanesulfonate chebi_ontology 539.11445 CHEBI:31890 benzoate ester methanesulfonate salt SARS-CoV-2 Severe acute respiratory syndrome coronavirus 2 severe acute respiratory syndrome coronavirus 2