1-(5-Nitrofurfurylidene)-2-semicarbazidoacetic acid 2-Semicarbazidoacetic acid, 1-(5-nitrofurfurylidene)- 3-(5-Nitrofurfurylideneamino)hydantoic acid 4-17-00-04472 (Beilstein Handbook Reference) 63981-22-6 Acetic acid, (1-carbamoyl-2-(5-nitrofurfurylidene)hydrazino)- BRN 0303036 Hydantoic acid, 3-(5-nitrofurfurylideneamino)- Kwas N-(5-nitro-2-furfurylideno)-2-semikarbazydooctowy [Polish]