| o-ethoxy-benzoic aci (1-carboxyethylidene)hydrazide |
| 2-ethoxybenzoic acid (1-carboxyethylidene)hydrazide |
| 2-ethoxy-benzoic aci (1-carboxyethylidene)hydrazide |
| m 6/42 |
| o-ethoxy-benzoyl-hydrazone of pyruvic acid |
| o-ethoxybenzoic acid (1-carboxyethylidene)hydrazide |
| o-etossi-benzoil-idrazone dell'acido piruvico |
| ruvazone |
