STN International - The Scientific and Technical Information Network
Search Example: Medical Research
Question: I was at a conference recently, and heard about a paper concerning Alzheimer's Disease and butyrylcholinesterase. How can I find research articles on this topic and even aquire them?
Strategy: Searching for chemical substance information using a chemical name is a
2-step prozess:
1. Locate the CAS REGISTRY record for the substance.
2. Select the LIFE SCIENCES link. This will start a "crossover search" from REGISTRY to the life sciences information of interest.
Search Strategy
Please click on the small screenshots to get larger ones. The large screenshots themselves can also be closed by clicking.
   Login:
Log on to STN Easy at STN Easy Home Page
If you do not have an existing STN account:
To open a new STN Easy account, click the blue "Open New Account" button on the STN Easy Home Page and complete and submit the online forms. Within 30 minutes, your STN login ID and password will be sent to the e-mail address you specify.
If you have an existing STN account:
To log on to STN Easy, simply enter your login ID and password.
Then click "Start Your Session."
More info about STN Easy Home Page
   CAS Number Search:
STN Easy Search Page
The Search Page is displayed. It offers three different search options: "Easy", "Advanced" and "CAS Number" Search.
Since the search is related to a chemical substance, begin by finding the CAS registry number for the substance. By using the CAS registry number, all synonyms for the chemical will automatically be searched in the Life Sciences category.
Select "CAS Number" tab and enter the name "butyrylcholinesterase" in the search box.
Click the green "Search" button. - Please note the search costs shown below the Search button.
More info about CAS Number Search
Option: Use the free "Browse Index" button before clicking "Search" to make sure that the chemical name you entered is spelled correctly and is included in the database you have chosen - before you actually pay for the search.
Simply select the chemical name you wish to search from the "Browse Index" list, then click "Search".
More info about Browse Index feature
   1. Answer Page:
Select title at Answer Page
The list of answers is displayed in a table format on the Answer Page.
Your search question and total number of answers are shown at the top of Answer Page as well.
STN Easy locates butyrylcholinesterase in the CAS REGISTRY database.
To display the detailed record, click the blue "Display Answers" button or directly the title hyperlink. - You may change the Display Format and Display Style using the selection boxes at the bottom of the title list.
Please note: The display cost is shown to the right of the answer.
More info about STN Easy Answer Page
   1. Display Page:
See detailed record at Display Page
The REGISTRY Display Page appears.
It includes the CAS Registry Number and also provides a wealth of additional information about the substance through hyperlinks to other STN databases.
To locate medical science or biomedical information that is directly related to the substance of interest, click the "Life Sciences" link.
More info about STN Easy Display Page
   2. Answer Page:
Select title at Answer Page
The list of answers is displayed on another Answer Page.
More than 30,000 records in five STN Easy databases are retrieved!
To narrow the search to only those research articles that discuss butyrylcholinesterase and "Alzheimer", click the "Refine Your Search" button.
There is no additional charge to refine your STN Easy search!
   Refine Page:
Refine your search at Answer Page
The Refine Page is displayed.
Enter the key word "Alzheimer" in the first search box. In the second row of search terms, select "AND" and the search-field "Publication Years". Then select the period of time in the drop-down boxes. Since only recent research is desired, limit it to "1999" to "Current."
Click "Search". - Please note: Refining is free!
More info about Refining
   3. Answer Page:
Select title at Answer Page
A precise set of research information from several databases is located.
Notice that, if desired, duplicate records from the search in multiple databases can be identified by clicking "Show Duplicates"
Review the answer titles, and click directly on a title of interest. - The display costs are shown to the right of the answer.
Hint: You may also change the "Display Format" and "Display Style" using the selection-boxes at the bottom of the title list. In order to view records for several answers at once, simply check the boxes next to the appropriate answers and click the "Display Answers" button at the bottom of the page.
More info about Showing Duplicates
   2. Display Page:
Use Full-Text Option at Display Page
Once more, the Display Page shows the record for the answer you selected.
To access the full text of this article, click on the green "Full Text Options" button at the bottom of the document record.
You are directly taken to the ChemPort Connection.
   Full Text:
Chemport Connection
Several options are provided at the ChemPort web site, some with no additional charge and some with additional charges. The options available to you are in bright color.
Subscribers of the journal can simply click "Subscribers view e-article" to read the full text - free of additional charge.
Non-Subscribers may select the "Delivery via e-mail, paper copy, fax copy" option, which is always available for an additional fee.
More info about STN Easy Full-Text Option
Chemport Connection
Immediately, the full text is displayed - right at your desktop.
In order to start a new search, simply click the appropriate search option below the STN Easy Logo on the blue Navigation Frame and a new Search Page is displayed.
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