| 4-(diethylcarbamoyl)-1-piperazineacetic aci 2-(5-nitrofurfurylidene)hydrazi |
| 2-furaldehyde, 2-(4-diethylcarbamoylpiperazinlymethylcarbonyl)hydrazono-5-nit |
| 5-nitro-2-furaldehyd (4-diethylcarbamoylpiperazinylmethylcarbonyl)hydrazo |
| 5-nitro-2-furaldehyd (4-diethylcarbamoylpiperazinylacetyl)hydrazone |
| 4-(diethylcarbamoyl)-1-piperazineacetic acid 2-(5-nitrofurfurylidene)hydrazid |
| 5-nitro-2-furaldehyde n'-diethylcarbamoylpiperazinoacetylhydrazone |
| 4-(diethylcarbamoyl)-1-piperazineacetic aci2-(5-nitrofurfurylidene)hydrazide |
