MARLBOROUGH, Mass.--(BUSINESS WIRE)--Sepracor Inc. (Nasdaq: SEPR) will announce its fourth quarter and full-year 2007 financial results on Feb. 5, 2008. In conjunction with the press release, Sepracor will host a conference call and live webcast beginning at 8:30 a.m. ET on Feb. 5, 2008 to discuss its fourth quarter and full-year 2007 financial results.