"Scientists working in many different areas…will be looking forwards to the future editions with their continued tradition of excellence." (American Journal of Therapeutics, September/October 2007)

"…a must for academic, public, and special libraries…essential." (CHOICE, June 2007)

"...the quality of the contents in one concise volume makes TMI the premier work of its kind...should be available as part of the arms-reach searching armamentarium of laboratory scientists of many stripes..." (Journal of Chemical Information and Modeling, March 2007)

"The Merck Index was first published in 1899, and it will continue to serve as the standard reference for chemists, biochemists, pharmacologists, pharmacists, and other health professionals." (Journal of Medicinal Chemistry, February 8, 2007)