Databases \ Merck Index


An encyclopaedia of organic and inorganic chemicals, including naturally-occurring substances, laboratory reagents, pharmaceuticals and drugs. The Merck Index online is the electronic counterpart of the printed Merck Index.

This electronic version contains the text and structures of the monographs, the supplementary tables section and the Organic Name Reactions section. It features powerful text and substructure searching tools for exploring the database.

Records contain molecular formulas and weights, systematic chemical names (including CAS names), generic and trivial names, trade names, manufacturers and distributors, company codes, CAS Registry numbers, physical and toxicity data, therapeutic and commercial uses, and bibliographic citations to the chemical, biomedical and patent literature.


This is the web version of the 15th edition (2013) from the Royal Society of Chemistry.


Merck Index is related to 3 subjects. Explore these subjects to find other useful databases.