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Diethyl 3-chlorobenzylphosphonate: BD4508678055-64-898%; ￥83.01g

Diethyl 4-chlorobenzylphosphonate: BD12462039225-17-795%; ￥95.05g

Diethyl 2-Chlorobenzylphosphonate: BD30782129074-98-498%; ￥2246.025g

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