Introduction

Using CA on CD's Substance Hierarchy you can

• Retrieve all references citing a substance on the CA on CD database
• Identify a substance name to combine with other search terms in Word Search

When to Use

Use the Substance Hierarchy to locate

• A substance based on structural information contained in its name
• A family of structurally related substances

Definition

The Substance Hierarchy consists of lists of substance names in a hierarchical organization based on chemical structure.

Example

Find references on the current CA on CD database to 4-(acetylamino) benzoic acid.

How to

1. From the tool bar, click .

The Substance Hierarchy window is displayed.

2. Type the parent name of the substance in the Find entry box.

As you type, the list scrolls to display entries around the term of interest. This is Level 1 of the Substance Hierarchy.

3.  Click on the name of the substance of interest.

If the substance name is	Click	To display	Proceed to
Preceded by a +		Level 2 of the hierarchy	Step 4
Followed by a CAS RN in brackets (e.g., [3880-99-7])		A list of reference titles citing the substance	Step 7
		A reference, if there is only one, citing the substance

Click on the entry of interest.

If the entry is	Click	To display	Proceed to
Preceded by a +		The next level of the hierarchy	Step 5
		The preceding level of the hierarchy	Step 3
Preceded by a -		The preceding level of the hierarchy	Step 3
Followed by a CAS RN in brackets (e.g., [3880-99-7])		A list of reference titles citing the substance	Step 7
		A reference, if there is only one, citing the substance

7. Click

From the Record window

• Records may be printed
• Records may be saved to disk
• A document order form may be printed
• Other records may be displayed

To display the	Then
Next record	Click Next
Previous record	Click Previous
List of document titles	Close the Record window to reveal the Search Results window behind it: Hold down the Ctrl key Strike the F4 key Note: If more than one record has been displayed, repeat Steps 1 and 2 to close each Record window.