Define your own variable groups using the G-Group feature
Tag a substituent to appear at variable positions on a ring
Skill Level:Intermediate
Prerequisites:
STN Basics Parts 1, 2, and 3 and STN Structure Searching Parts 1 and 2
or
Competencies with keyword searching in bibliographic databases and using the HELP, FILE, EXPAND, SEARCH, DISPLAY, LOGOFF, FOCUS, and INDEX commands
Ability to competently apply logic operators, truncation, and proximity operators as well as to search in specialized fields
Know how to use CAS roles and the SELECT CHEM command, conduct effective substance searches, and retrieve bibliographic references associated with chemical substances
Skill in drawing chemical structures and modifying bonds, atoms or rings, uploading them for searching, and finding associated references for selected substances