| n-(((4-ethoxyphenyl)amino)carbonyl)-3-(1-methyl-2-phenylethyl)-sydnone imin |
| n(sup 6)-(4-ethoxyphenyl)carbamoyl-3-phenylisopropylsydnone imine |
| n-(((4-ethoxyphenyl)amino)carbonyl)-3-(1-methyl-2-phenylethyl)sydnone imine |
| n-((p-ethoxyphenyl)carbamoyl)-3-(alpha-methylphenethyl)sidnone imine |
