Substance Searching in SciFinder Scholar(pdf) by Alexa Morrow

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									SciFinder Scholar: Substance Searches
CAS databases for chemistry and related disciplines                                      Substance information
                                                                                         •Registry numbers
                       Locating a Substance                                              •Chemical names
                                                                                         •Molecular formulas
                                                This is usually the easiest way to       •Properties
                                                search for a substance if you            •Commercial sources
                                                know the registry number,                •Regulatory information
                                                common name, or trade name
                                                                                         •Article references
                                                (e.g. aspirin). You can also
                                                search by chemical name, but             •Patents
                                                complex chemical names can be            •Reactions
1                                               difficult to search.

                                                1.Click LOCATE. The Locate window should open.
                                                2.Click SUBSTANCE IDENTIFIER. The Locate by Substance
                                                  Identifier window should open.
                                                3. Enter substance identifier/s
                                                    •Use full names, not name fragments
                                                       •ethane will not find chloroethane
                                                       •ethan will have no hits (will not find ethane, ethanol,
                                                        etc.)
                                                    •Registry numbers can be with or without hyphens
                                                4. Click OK. Search results should appear.



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L. Hamasaki, 2009.04                                                                  UHM SCI-TECH SEARCH GUIDE
University of Hawaii at Manoa                                                   Science & Technology Reference Department


                                  Exploring by Molecular Formula
1.EXPLORE          MOLECULAR FORMULA
2.Enter the molecular formula and click OK. Search results should
 appear. If you get an error message or no hits, check the tips below
 and try again.
GENERAL TIPS
                                                                                            2
•Formula order does not matter. SciFinder will place elements
 in Hill order if you use the BACK button.
•Case does not matter if the formula is unambiguous. To
 avoid problems, always capitalize the first letter of an element
 symbol. Also, do not capitalize the second letter of symbols.
•A space is needed between adjacent elements that could
 form a single element symbol (eg. carbon and oxygen must
 have a space between them, C O, to avoid confusion with            TIPS FOR INORGANIC SALTS
 cobalt, Co). To avoid problems, you can always enter a             •Enter as parent acid.metal or metal.parent acid
 space between elements.                                             (eg. H N O3.Na or Na.H N O3)
•Separate parts of multicomponent substances with a period             •Exception: salts made only of monatomic ions
•For nonstoichiometric formulas, use dots between elements,             can be entered normally (eg. NaCl, CoCl2,
 but do not use ratios                                                  K2S)
                                                                    •Ratios do not have to be reduced. The following
                                                                     are all acceptable:
                                                                       H3P O4.3/2Ca                    2/
                                                                                                            3 H3P   O4.Ca
                                                                       2H3P O4.3Ca                     4H3P O4.6Ca
                                                                    •Use improper fractions instead of mixed fractions
                                                                     or decimal values (eg. 3/2 instead of 1½ or 1.5)




                                          Commercial sources                     Regulated chemicals listing

                                             References                                Reaction information



                                                                                                Results are in accession
                                                                                                order (the order they were
                                                                                                added to the database),
                                                                                                so you usually need to
                                                                                                scroll to the bottom to find
                                                                                                the most common
                                                                                                substances.

                                                                                                 Caffeine is shown as the
                                                                                                 last of 603 substances
                                   Total number of substances found
Alternate search strategies:
•To eliminate isomers, go to EXPLORE         STRUCTURE and draw the structure
•For nonstoichiometric formulas, try EXPLORE        RESEARCH TOPIC

L. Hamasaki, 2009.04                                                                        UHM SCI-TECH SEARCH GUIDE

								
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