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Wiley Launches Mass Spectra of Androgens, Estrogens and other Steroids 2005

Hoboken, NJ, May 23, 2005 - Global publisher John Wiley & Sons, Inc., today announced the launch of Mass Spectra of Androgens, Estrogens and other Steroids 2005, the first update of this collection since 1998. The 2005 edition contains 2,979 high-resolution (>100 peaks per spectrum) EI mass spectra of androgens and estrogens and their trimethylsily-, Omethoxyoxime- and acetal derivatives. Spectral libraries contain spectral "fingerprints" of compounds and are used by labs to help identify unknown trace substances and to research new compounds.

Steroids are of considerable therapeutic importance but are being increasingly abused for performance enhancement purposes. Each spectrum is accompanied by the structure and trivial name, molecular formula, molecular weight, nominal mass and base peak. Most spectra of androgens and estrogens were obtained on the same mass spectrometer under identical conditions. This collection is an invaluable source of data to chemists and biochemists involved in drug development, drug screening and clinical toxicology, as well as to endocrinologists, natural products chemists and general mass spectroscopists.

Mass Spectra of Androgens, Estrogens and other Steroids 2005 comes as a Multi-format CD-ROM - compatible with most popular equipment file formats.

For more information about, Mass Spectra of Androgens, Estrogens and other Steroids 2005, please visit Wiley at www.wiley.com/go/databases or e-mail dbinquiry@wiley.com.

About Wiley STM Databases
Since the 1960s publication of the Atlas of Mass Spectral Data, John Wiley & Sons, Inc. remains the leading provider of data for mass spectrometry, nuclear magnetic resonance (NMR), and infrared (IR) spectroscopies, available through equipment manufacturers and through Wiley's enterprise spectroscopy server, SpecInfo. Wiley also publishes evaluated reactions databases based on the celebrated Organic Syntheses and Organic Reactions book series through Wiley InterScience, the Company's dynamic online publishing platform.

About John Wiley & Sons, Inc.
Founded in 1807, John Wiley & Sons, Inc., provides must-have content and services to customers worldwide. Its core businesses include scientific, technical, and medical journals, encyclopedias, books, and online products and services; professional and consumer books and subscription services; and educational materials for undergraduate and graduate students and lifelong learners. Wiley has publishing, marketing, and distribution centers in the United States, Canada, Europe, Asia, and Australia. The Company is listed on the New York Stock Exchange under the symbols JWa and JWb. Wiley's Internet site can be accessed at http://www.wiley.com.