When you get in the STN EXPRESS lane you're not restricted to just

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When you get in the STN EXPRESS lane you're not restricted to just "10 items or less."

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Check out 10 million chemical structures!

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When you "shop" in the STN International®online network you have access to 40 databases relating to chemistry (and an additional 40 other scientific and technical databases). One of them, the CAS Registry file, contains more than 10 million structure diagrams. With STN EXPRESS software for your PC, you can build and search these structures more easily. Sim.*-. ,t

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Select "templates" from the menu, and STN Express will show you a list of some of the available structure templates. Review the remainder of the list by selecting "next."

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a n d 3 D molecular m o d e l i n g information package (includes STN and STN EXPRESS preview disks for IBM® and 100% compatibles — 3 1/2 inch or 5 1/4 inch disks, or Macintosh;® please indicate your preference).

Select "aromatics" to display this selection of templates. Simply use your mouse to select the template of interest. Now you can modify the structure to fit your specifications.

Using the Guided Search feature you can draw a structure freehand, or use templates. Then you can search for exactly that substance, all related substances, preparations of that substance, or its role in reactions. And, for the more sophisticated shopper, there is the STN EXPRESSAlchemy II connection that enables you to d o 3D molecular modeling at your PC. With STN EXPRESS you can have it all. Contact u s today for y o u r free STN International, STN EXPRESS

STN International c/o Chemical Abstracts Service Department: 30490 P.O. Box 3012 Columbus, Ohio 43210 614-447-3600 800-848-6538 ext. 3731 (ask for Customer Service)

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INTERNATIONAL

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