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ChemOffice.Com - CambridgeSoft

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Search Type<br />

Administrator<br />

Normal Searching<br />

A Normal search finds structures that either<br />

contain (Substructure) or match (Full Structure) the<br />

query. When drawing a structure query, you can<br />

attach different features to a query, such as atom<br />

lists and variable bond types, to perform a narrower<br />

or broader search. You can also modify the results<br />

of a Normal search by selecting options in the<br />

Search Details tab of the Preferences dialog box.<br />

2. From the Column menu, choose a field.<br />

3. Paste or type a list of field parameters into the<br />

Find List text box.<br />

4. Click OK.<br />

The list of matching records is retrieved.<br />

Structure Searches<br />

You can search a ChemFinder database by sub- or<br />

full structure for similarity or exact matching. To<br />

define your search more precisely, use the query<br />

functions in ChemDraw. These are described in<br />

Chapter 9 of the ChemDraw User Manual, and in<br />

Appendix K: “Structural Query Features.” in this<br />

manual.<br />

ChemFinder matches structures in three ways:<br />

• Search type (Normal/Exact/Similar)<br />

• Structure mode (sub- or full structure)<br />

• Tautomerism<br />

NOTE: Not all options for each type are compatible with<br />

other types. For example, Tautomeric searches must be<br />

either Exact or Normal.<br />

The query structure is highlighted in red in the<br />

hitlist structures to visualize the match.<br />

Exact Searching<br />

NOTE: The Exact search type was known as the Identity<br />

search type in previous versions of ChemFinder.<br />

The Exact search type is intended for use in<br />

compound registration, when you must know if a<br />

perfectly identical copy of your query compound is<br />

already present in the database. It is similar to a<br />

Normal Full Structure search, except that generic<br />

atom and bond types such as R, A, and Double-or-<br />

Aromatic in the query will match corresponding<br />

atom and bond types in the target only if they are<br />

also of the same generic type. Thus, an R hits only<br />

320•Searching<br />

<strong>CambridgeSoft</strong><br />

Structure Searches

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