VWR, a Madison Dearborn-backed supplier of chemicals and other laboratory products, filed on Tuesday with the SEC to raise up to $750 million in an initial public offering. The Radnor, PA-based company traces its origins back to 1852 and booked $4.2 billion in sales for the 12 months ended March 31, 2014. BofA Merrill Lynch, Goldman Sachs, J.P. Morgan, Barclays and Deutsche Bank are the joint bookrunners on the deal. No pricing terms were disclosed and no ticker nor exchange has been selected. With over $1 billion in fiscal year 2013 revenue, VWR is not an emerging growth company and could go public after late-August.