STN Easy Quick Tips - CAS Number Lookup

CAS Number Lookup

Introduction

This section describes how to use the CAS Number option in STN Easy to look up a CAS Registry Number.

Definition

CAS Numbers are also called

CAS Registry Numbers
CAS RNs

When to use

Use this strategy when you want to

Verify a CAS Number
Identify chemical names associated with a CAS Number
Identify chemical structure associated with a CAS Number
Locate associated substance information

Preview

Locating chemical substance information using a CAS Number is a 2-step process:

Locate the REGISTRY record for the substance.
Link to substance information of interest.

Example

Find references for the substance identified by CAS Number 26159-34-2.

1. Locate the REGISTRY record

Follow these steps to locate a REGISTRY record.

Step Do the following:

1
Click CAS Number Search.

2
The Search Page appears. Type the CAS Number in the entry box.

3 Click

4
The Answer Page appears. Scroll down to the Answer Table to view compounds.

Identifiers from REGISTRY in Most Recent Order Molecular Formula

1 26159-34-2 REGISTRY C14 H14 O3.Na

Click on the REGISTRY hyperlink.

5 The REGISTRY Display Page appears.

2. Link to substance information

Follow these steps to link to substance information from a REGISTRY record.

Step Do the following:

1
On the REGISTRY Display Page, scroll down to

Click the technology category hyperlink of interest:

2
The Answer Page appears. Scroll down to the Answer Table to view titles.

Titles from CAplus in Most Recent Order | Best Match Order

1 Preparation and use of aminoacyloxyalkyl esters of non-steroidal anti-inflammatory carboxylic acids as novel prodrugs

2 A pH-dependent drug release composition comprising a complex between poly(maleic anhydride-alkyl vinyl ether) and polyvinylpyrrolidone

3
View more detail about

1 title, by clicking on the title hyperlink
>1 title, by clicking to place a checkmark in the boxes associated with the titles of interest. Click

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