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Chapter 10: The Merck Index<br />

What Is It<br />

The Merck Index is a one-volume encyclopedia of<br />

chemicals, drugs and biologicals that contains more<br />

than 10,000 monographs. The entries are not a<br />

listing of Merck & Co., Inc. products, but rather<br />

cover a wide range of compounds that have been<br />

selected by the editors on the basis of present or<br />

historic importance and interest. Since the<br />

publication of its Twelfth Edition in 1996, over<br />

5,000 monographs have been significantly revised<br />

and updated. Each monograph is a concise<br />

description of a single substance or a small group of<br />

closely related compounds. The information<br />

provided includes chemical, common and generic<br />

names, trademarks and their associated companies,<br />

Chemical Abstracts Service (CAS) Registry<br />

Numbers, molecular formulas and weights, physical<br />

and toxicity data, therapeutic and commercial uses,<br />

citations to the chemical, biomedical and patent<br />

literature, and chemical structures.<br />

How Is It Useful<br />

For more than 100 years, the printed edition of The<br />

Merck Index has been the premier reference for<br />

validated data about many compounds of general<br />

interest. The subjects covered include human and<br />

veterinary drugs, biologicals and natural products,<br />

agricultural chemicals, industrial and laboratory<br />

chemicals, and environmentally significant<br />

compounds. The electronic version includes all of<br />

the information in the printed edition, and<br />

enhances it by allowing direct and rapid searching<br />

over all data fields. Where the printed edition offers<br />

indexes of names and CAS Registry Numbers, the<br />

electronic version allows the user to enter them as<br />

search terms, and takes you directly to the relevant<br />

monographs without having to flip through a bulky<br />

printed volume. Physical properties as well as many<br />

other attributes can also be used in the search. As<br />

with the other ChemInfo databases, The Merck<br />

Index also allows searching by structure,<br />

substructure, and similarity, all of which are virtually<br />

impossible when using the printed edition alone.<br />

Organic Name Reactions, and Additional Tables<br />

are also available to search through.<br />

Using the Merck Index<br />

CD<br />

Directory: The Merck Index CD-ROM<br />

Filenames: The Merck Index.cfw<br />

Number of <strong>Com</strong>pounds: 10,890<br />

<strong>ChemOffice</strong> Enterprise Workgroup & Databases 2005 The Merck Index • 209<br />

What Is It

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