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* Some buyers were on the sidelines surrounding the US Department of Agriculture's monthly supply and demand report that was released at midday.
* USDA's estimate for larger-than-expected US soybean ending stocks pressured soy prices on the Chicago Board of Trade. CBOT December soymeal futures were down 90 cents at $307.10 per ton at 12:45 p.m. CST (1845 GMT).
* USDA earlier said 255,100 tonnes of US soymeal was sold for export last week, near the low end of analyst estimates for 200,000 to 450,000 tonnes.