| 1-(5-nitrofurfurylidene)-2-semicarbazidoacetic aci ethyl ester |
| (1-carbamoyl-2-(5-nitrofurfurylidene)hydrazino)-acetic aci ethyl ester |
| ester etylowy kwas n-(5-nitro-2-furfurylideno)-2-semikarbazydooctowy |
| ethyl 1-(5-nitrofurfurylidene)-2-semicarbazidoacetate |
| 3-(5-nitrofurfurylideneamino)-hydantoic aci ethyl ester |
| 1-(5-nitrofurfurylidene)-2-semicarbazidoacetic aciethyl ester |
