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