Searching
Search using commands, scripts, structures, or sequences.
Command-Based Searching
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Opening Databases and Clusters to Search
The Databases tab lists databases (files) and clusters available for searching: To view information about a database or cluster, click...
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Entering Commands on the Command Line
Enter STN commands and values at the prompt and click the Submit button to open database(s) and enter queries. There is a 292-characte...
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Using the Command Window: Entering STN Commands and Running Simple Scripts
The Command Window contains all of the STN commands issued during the search session and runs a list of STN commands and simple scripts...
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Adding CAS Lexicon Terms to Your Search
The CAS Lexicon tab enables you to search the CAS Lexicon and add terms. The major components are a Concept/General Subject vocabulary;...
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Using Search Assistants
Click the arrow () in the lower left-hand corner of the main STNext window to access the Author, Subject, and Organization search assis...
Script-Based Searching
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Script-Based Searching Overview
STN scripting is a mini programming language used to write a repeatable and adaptable series of commands and statements. Scripts can be...
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Importing a Script
STNext enables you to import a .txt, .sc, .scb, .data script file in three ways: Session window: Click the Import button under Scripts...
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Creating a Script
You may write a script directly in STNext or create a search script from an imported list of terms. Writing a Script File in STNext Cl...
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Running a Script
After you've imported a script, STNext enables you to run it in two ways: Clicking the Run button under Scripts > Recent Scripts in th...
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Script Language Components
Script language is composed of "commands" and "values." Commands are words that have special meaning in script language. Values are pie...
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Script Commands and Statements
Some of the commands used in the STN script statements are listed below in alphabetical order: ANALYZE: Extract up to 50,000 terms fr...
Structure-Based Searching
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Structure-Based Searching Overview
To search databases using a chemical structure: Draw a structure or import a structure file: Draw: Drawing and Editing Structures ...
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Importing a Structure File
There are two ways to import a structure file into STNext: Clicking the Import Structure button on the My Files > Structures page Clic...
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Drawing and Editing Structures
Use the Structure Editor within STNext to draw and edit structures; the below videos demonstrate using the Structure Editor and its fea...
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Uploading a Structure
There are two ways to upload a structure file into STNext: Clicking the Upload button on the My Files > Structures page Clicking the U...
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Searching DWPI Chemical Fragmentation Codes
STNext can translate a structure into corresponding alphanumeric fragmentation codes and search them against the WPIX or WPIDS files vi...
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Structure Search Options in STNext
There are four structure search options in STNext: exact, family, closed substructure, and substructure. Structure Search Type Retri...
Sequence-Based Searching
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Sequence-Based Searching Overview
You may search databases using sequences: Import a sequence .txt file. The sequence formats supported by STNext include plain text, F...
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Importing a Sequence File
The following sequence formats saved as a .txt file are supported by STNext: plain text, FASTA, GENBANK, and EMBL. There are two ways t...
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Uploading a Sequence File
There are two ways to upload a sequence in STNext: Clicking the Upload button in the Edit Sequence windowNote: Any edits you make to t...
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Editing a Sequence File
There are two ways to access the sequence file editing function: Clicking the stored sequence file's Edit button on the My Files > Str...
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Downloading a Sequence File
Downloading a Sequence File from the Edit Sequence Window Click the Download icon in the Edit Sequence window to download the sequence ...
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Sequence File Errors
Multiple Sequences Detected When a sequence file is imported that has multiple sequences, a "Multiple sequences detected" error message...