MARLBOROUGH, Mass.--(BUSINESS WIRE)--Sepracor Inc. (Nasdaq: SEPR) will announce its second quarter 2009 financial results on July 24, 2009. In conjunction with the press release, Sepracor will host a conference call and live webcast beginning at 8:30 a.m. ET on July 24, 2009 to discuss its second quarter and first-half 2009 financial results.