PureTech Ventures (Boston, Mass.) named former Sanofi (Euronext:SAN; NYSE:SNY) CEO Christopher Viehbacher to its board.PureTech CEO and Managing Partner Daphne Zohar said the board is involved in choosing thematic areas for investment and making investment decisions.PureTech, which has raised at least $105 million since October 2014, typically provides seed funding to new companies that are set up as operating subsidiaries, then seeks outside investors as the newcos mature (see BioCentury Extra, Jan. 9, 2015).