1,2,3-Oxadiazolium, 5-hydroxy-3-(4-methoxyphenyl)-, inner salt (9CI) 3-(4-Methoxyphenyl)sydnone 3-(p-Methoxyphenyl)sydnone 3815-80-3 N-(p-Methoxyphenyl)-sydnon [German] N-p-Anisylsydnone NSC 38720 Sydnone, 3-(4-methoxyphenyl)- (9CI) Sydnone, 3-(p-methoxyphenyl)-