Corn prices are down 2 to 4 cents early Thursday, extending a pullback after futures rallied nearly 40 cents off last week's lows. On Wednesday, contracts fell 3 to 8 ¾ cents at the close, with open interest down 3,588 contracts and 88 deliveries issued against July futures overnight. The CmdtyView national average cash corn price was 9 cents lower at $4.04. EIA data showed ethanol production at 1.093 million barrels per day in the week of July 3, down 24,000 barrels per day from the prior week, while ethanol stocks drew 762,000 barrels to 23.928 million barrels. Traders await the USDA Export Sales report this morning, with old crop sales expected between 0.6 and 1.1 million metric tons and new crop between 600,000 and 900,000 metric tons for the week of July 2. The monthly WASDE report on Friday is anticipated to show old crop corn stocks cut by 66 million bushels to 2.079 billion bushels and new crop carryout down 61 million bushels to 1.899 billion bushels, according to a Bloomberg survey.