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(2009/05/09)N6-Ethoxycarbonylphenyl-3-phenylisopropylsydnonimine
N6-(4-methyl-1,3,2-dioxaphosphorinan-2-yl)-3-(α-methylphenethyl)sydnone imine
5-[3-(4-carboxy-phenyl)-ureido]-3-(1-methyl-2-phenyl-ethyl)-[1,2,3]oxadiazolium betaine
3-(1-methyl-2-phenylethyl)-5-[[(4-methoxyphenylamino)carbonyl]amino]-1,2,3-oxadiazolium
4-bromo-3-(1-methyl-2-phenyl-ethyl)-5-(3-methyl-ureido)-[1,2,3]oxadiazolium betaine