Markush TOPFRAG is an essential tool for searching the chemical structures
and structure information found in Derwent’s online databases. You can
use it to draw structures quickly and easily offline, before you start accruing
online costs, and to generate automatically search strategies for structure
information in Derwent World Patents Index, and for chemical
structures in Merged Markush Service.
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- On-screen menus of drawing tools, atoms, bonds and templates
- Import functionality which allows structures to be imported from alternative
drawing tools such as MACCS and ISIS, in SD or MOL file format
- Apply automatically the correct structural conventions to your search
- Save structures and strategies for later use, modification or refinement
- Includes routines to either halt progress or issue a warning when attempting
to overlay nodes (to prevent strategy problems due to accidental overlay).
- Compatible with DIALOG, Questel.Orbit and STN online systems
- Stable operation in Windows NT and Windows 95 environments
- The source code has been checked for year 2000 compliance
- One-time purchase
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