1,2,3-Oxadiazolium, 5-hydroxy-3-(2-methylphenyl)-, inner salt (9CI) 3-(2-Methylphenyl)sydnone 3-(o-Tolyl)sydnone 3483-18-9 4-27-00-07443 (Beilstein Handbook Reference) BRN 3672322 N-(o-Tolyl)-sydnon Sydnone, 3-(2-methylphenyl)- Sydnone, 3-o-tolyl-