what is the difference between merck and msd
Merck & Co. In 1953, Merck & Co. merged with Philadelphia-based Sharp & Dohme, Inc., founded by Alpheus Phineas Sharp and Carl Friedrich Louis Dohme in 1845, becoming the largest US drugmaker.[6][7] The merger combined Merck & Co.'s strength in scientific research and chemical manufacturing with Sharp & Dohme's sales and distribution system and its marketing expertise. The combined company kept the trade name Merck in the United States and Canada, and as Merck Sharp & Dohme (MSD) outside North America. In 1965 Merck & Co. acquired Charles E. Frosst Ltd. of Montreal, Canada (founded 1899) and created Merck-Frosst Canada, Inc., as its Canadian subsidiary and pharmaceutical research facility. Merck & Co. closed this facility in July 2010,[8] and the company was renamed Merck Canada in 2011.