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4-Hydroxypyridazine: BD9800520733-10-297%; ￥405.01g

6-Hydroxypyridazine-3-carboxylic acid: BD261737972-69-398%; ￥65.05g

Ethyl 6-hydroxypyridazine-3-carboxylate: BD5503963001-31-098%; ￥132.01g

6-Chloro-3-hydroxypyridazine-4-carboxylic acid: BD10882150681-26-098%; ￥1668.05g

Ethyl 6-chloro-3-hydroxypyridazine-4-carboxylate: BD21195161404-41-998%; ￥1250.010g

6-Chloro-3-hydroxypyridazine: BD4066019064-67-697%; ￥942.0500g

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