Sanofi-Aventis to Buy BMP Sunstone to Expand in China

Sanofi-Aventis SA agreed to buy BMP Sunstone Corp., the maker of the Hao Wa Wa brand of children’s cough and cold treatments, for $520.6 million in cash to expand in Chinese consumer health-care products.

BMP Sunstone stockholders will receive $10 a share, about 30 percent more than yesterday’s closing price on the Nasdaq Stock Market, Paris-based Sanofi said in a statement today. BMP Sunstone’s board approved the sale, and shareholders who own 23 percent of the Beijing-based company’s stock agreed to support the deal, Sanofi said.