The invention includes a user method, routines and system for identifying an imprint on a therapeutic dosage form. The method includes reducing imprints to their basic informational components; grouping the basic informational components into searchable basic informational component group databases; searching the databases in an organized manner; and matching features of the imprint to basic informational components, resulting in a positive identification of the imprint.


< Carbon-linked substituted piperidines and derivatives thereof useful as histamine H.sub.3 antagonists

> Five-membered heterocycles useful as serine protease inhibitors

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