Description:

Crystal polymorphs are solid materials that have the ability to exist in more than one solid form or crystal structure.  This polymorphic ability can be found potentially in any crystalline material including polymers, minerals, and metals. Polymorphic solids may even display different physical properties.

 

Solid-state polymorphism impacts the activity, stability, dissolution, and bioavailability of pharmaceuticals, and is also important in the fields of materials, agrochemicals, pigments, dyestuffs, foods, and explosives.

 

Crystal polymorph information is present in the patent, chemistry, medical, engineering, and general science databases of STN. The challenge in searching these shape-shifting substances lies in overlapping technical terms, a lack of standardization in terminology, and the fact that polymorph substances are not separately registered.

 

It's time to get creative!  This e-Seminar offers techniques and search strategies to help you locate keywords and synonyms to use as search terms when searching for crystal polymorph information.  With a combination of thesauri, the EXPAND command, CAS REGISTRY and HCAplus index terms, alternate spellings (such as cristal, kristal), citation searching, and persistence, you can overcome the challenges presented by these evasive substances.

 

In this session, you will learn how to use:

• keyword and synonym searching
• the EXPAND command (both left and right) to locate search terms
• controlled terminology in thesauri 
• the STN Express family structure search wizard combined with text searching
• SEL CHEM to build comprehensive lists of substance synonyms
• free display formats to evaluate indexing for additional terminology
• AND, NOT proximity operators in appropriate databases  
• citation searching to locate related concepts

 

Who should attend?

 

 

Novice to experienced STN searchers interested in this cutting edge field of chemistry