PREFACE

Although the official compendia list tests and limits for drug substances
related to identity, purity, and strength, they normally do not provide other
physical or chemical data, nor do they list methods of synthesis or pathways of
physical or biological degradation and metabolism. For drug substances important
enough to be accorded monographs in the official compendia such supplemental
information should also be made readily available. To this end the Pharmaceutical
Analysis and Control Section, Academy of Pharmaceutical Sciences,
has undertaken a cooperative venture to compile and publish Analytical Profiles
of Drug Substances in a series of volumes of which this is the fifth.
The concept of analytical profiles is taking hold not only for cornpendial
drugs but, increasingly, in the industrial research laboratories. Analytical profiles
are being prepared and periodically updated to provide physicochemical and
analytical information of new drug substances during the consecutive stages of
research and development. Hopefully, then, in the not too distant future, the
publication of an analytical profile will require a minimum of effort whenever a
new drug substance is selected for cornpendial status.
The cooperative spirit of our contributors has made this venture possible.
All those who have found the profiles useful are earnestly requested to contribute
a monograph of their own. The editors stand ready to receive such
contributions.

Klaus Florey

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