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ChemOffice.Com - CambridgeSoft

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Administrator<br />

ChemFinder searches over the previously<br />

retrieved hit list. If no hits are found, a message<br />

appears asking whether to search over the<br />

entire database.<br />

As long as the Over Current List switch is on, each<br />

search further refines the current list. Use the<br />

Retrieve All command to reset. You may also use<br />

the Restore Previous List command, which acts like<br />

a “Back” button. Restore Previous List goes back<br />

one in the history, including any “Retrieve All”s you<br />

might have done.<br />

Entering a Structural Query<br />

To begin a structural query:<br />

1. From the Search menu, choose Enter Query,<br />

to clear the form.<br />

2. Place a structure into a data box use any of the<br />

following methods:<br />

a. Double-click in the structure box and edit<br />

with the ChemDraw ActiveX toolbar.<br />

b. Right-click and select Edit in ChemDraw.<br />

c. Right-click and use Read Structure... to<br />

open an existing molecule file.<br />

d. Use Paste from the Edit menu to insert a<br />

structure from the clipboard.<br />

3. Choose Preferences from the Search menu,<br />

and click the Search Type tab.<br />

4. Select the appropriate options. Optionally,<br />

select options on the Search Details tab as well.<br />

5. Choose Find from the Search menu.<br />

The status bar counters indicate search progress.<br />

When the search is complete, the form displays the<br />

first hit. The list you can browse is limited to the<br />

hits. For Normal or Exact searches, the hit portion<br />

of each molecule is highlighted in red. If a search<br />

doesn’t find any hits, you are returned to query<br />

mode.<br />

TIP: You can change the highlight color in the preferences<br />

dialog. For example, to show no highlighting, choose black as<br />

the highlight color. See “Color Preferences” on page 342 for<br />

more information.<br />

Using the Current Molecule as a Query<br />

As you browse through a database, you may submit<br />

any structure on the screen as the structural query.<br />

Often, you use similarity or substructure searches<br />

(see above) with this type of query to find related<br />

compounds.<br />

To use the current molecule for a query:<br />

1. Using the Record commands, go to the record<br />

containing the structure that you want to use as<br />

a query.<br />

2. From the Search menu, choose Current Mol<br />

As Query.<br />

All boxes of the form are cleared except the<br />

structure so that the molecule on display can be<br />

used as part of the query. You can then<br />

continue with the query as if you had drawn the<br />

structure from scratch.<br />

Finding the Current Molecule<br />

The Find Current Molecule command, located in<br />

the Search menu and on the Search toolbar, is<br />

similar to the Current Mol as Query command<br />

discussed above. As you browse through the<br />

database you may find a molecule that interests you,<br />

and want to find other related records.<br />

The Find Current Molecule feature lets you<br />

perform a quick structural search of the structure<br />

currently being displayed on the form. However,<br />

this feature does not allow you to enter other search<br />

terms. The type of structure search (complete<br />

330•Searching<br />

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

Searching Procedures

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