| 4-(2-(6-chloro-3-pyridazinyl)hydrazinylidene)-valeric aci ethyl ester |
| 1-(ethoxycarbonyl)-3-butylidene-(6-chloro-3-pyridazinyl)hydrazine |
| 4-(2-(6-chloro-3-pyridazinyl)hydrazinylidene)valeric acid ethyl ester |
| gyki 11628 |
| 4-((6-chloro-3-pyridazinyl)hydrazono)-pentanoic aci ethyl ester |
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