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Ethyl 4-(4-bromophenyl)-2,4-dioxobutanoate

Methyl 3-(n-tert-butyl)aminopropionate

Ethyl 4-(5-benzyloxy-2-pyridyl)-2,4-dioxobutanoate

Methyl 1-(6-methoxy-3-pyridazinyl)-5-(2-pyridyl)-1h-pyrazole-3-carboxylate

Ethyl 4-(5-methyl-2-pyrazinyl)-2,4-dioxobutanoate

Ethyl 4-(5-methyl-2-pyridyl)-2,4-dioxobutanoate

Methyl 4-(5-methyl-2-pyridyl)-2,4-dioxobutanoate

Methyl 1-(6-chloro-3-pyridazinyl)-5-(2-pyridyl)-1h-pyrazole-3-carboxylate

Methyl 4-(2-pyridyl)-2,4-dioxobutanoate

1-(6-Methoxy-3-pyridazinyl)-5-(2-pyridinyl)-1h-pyrazole-3-carboxylic acid

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