Basic Filtering
To narrow down results, use the options on the Analyze or Refine tabs on the left-hand toolbar. Available options depend on whether you've searched for references, substances, or reactions.
Use the Analyze tab to choose from a category's most common results in your answer set, such as author name, journal name, or publication year.
Use the Refine tab to search for any value or range in a category, such as publication years, document types, or languages. Refine acts more like the search filters you're probably used to: different options eliminate results that do not match your criteria.
Common Refinements
The Analysis and Refine options will be different based on what kind of search you've conducted: Reference, Substances, or Reactions. Listed below are some commonly-used options to narrow your search down:
Reference
- Author Name (Analyze, Refine): Search by, or select only references by, a particular author.
- CAS Registry Number (Analyze): Select only references including a certain substance (identified by registry number).
- Document Type (Analyze, Refine): Select only certain types of references (such as journal article, patent, review article). Note: Use Refine to select multiple types.
- Index Term (Analyze): Select references indexed using certain descriptive terms.
- CA Concept Heading (Analyze): Select only references with certain terms indicated as main concepts.
- Language (Analyze, Refine): Select only references in a certain language. Note: Use Refine to select multiple languages.
- Publication Year (Analyze, Refine): Select references from a certain year or years. Note: Use Refine to choose a range of years (including a year to present) and Analysis to see during which years the most references were published.
- Research Topic (Refine): Modify your search by adding more terms.
Substances
- Atom Attachment (Refine): Select an attachment site and limit to the atom(s) you would like to see.
- Chemical Structure (Refine): Modify your search in the structure editor or add limits (such as only substances that have references).
- Commercial Availability (Analyze, Refine): Select only substances available or not available commercially.
- Elements (Analyze): Select only substances that include a certain element.
- Isotope-Containing (Refine): Select only substances that do or do not contain isotopes.
- Reaction Availability (Analyze): Select only substances that are or are not referenced in a reaction.
- Reference Availability (Refine): Select only substances that do or do not have references attached.
- Substance Role (Analyze): Select only substances used in a role in their references (such as Preparation or Uses).
Reactions
- Author Name (Analyze, Refine): Search by, or select only references by, a particular author.
- Catalyst (Analyze): Select only reactions using a certain catalyst.
- Document Type (Analyze, Refine): Select only certain types of references (such as journal article, patent, review article). Note: Use Refine to select multiple types.
- Excluding Reaction Classification (Refine): Select only reactions without certain classifications (such as biotransformation, electrochemical, and non-catalyzed).
- Experimental Procedure (Analyze): Select only reactions that do or do not have an attached experimental procedure.
- Language (Analyze): Select only references in a certain language.
- Number of Steps (Analyze, Refine): Select only reactions that take a certain number of steps. Note: Use Refine to choose a number range.
- Product Yield (Analyze, Refine): Select only reactions with a certain percentage product yield. Note: Use Refine to choose an upper and/or lower limit and Analysis to select ten-percent ranges.
- Publication Year (Analyze): Select only reactions from a certain year.
- Reaction Classification (Refine): Select only reactions with certain classifications (such as biotransformation, electrochemical, and non-catalyzed).
- Reaction Structure (Refine): Modify your search in the reaction editor.
- Solvent (Analyze): Select only reactions using a certain catalyst.
