5-(3-n-Butyloxalylaminophenyl)tetrazole 82989-25-1 Acetic acid, oxo((3-(1H-tetrazol-5-yl)phenyl)amino)-, butyl ester Butyl 3'-(1H-tetrazol-5-yl)oxanilate MTB Oxo((3-(1H-tetrazol-5-yl)phenyl)amino)acetic acid butyl ester Tazanolast Tazanolast [INN:JAN] Tazanolastum [INN-Latin] WP-833