Type in your Login ID and Password , then click on the GO button. Select the category Chemistry Substances since you are looking for information about a specific compound. Except for very simple and well-known names, you should use Advanced Search . Be sure to match the entry with its Category. To find it on Chemical Abstracts you can search via name, formula or structure.
Some compounds have obsolete numbers as well, which is important for searching old databases.
How to obtain the structure of a compound from CAS when you only know the CAS registry number. Select the Chemical Substances Category and click on Advanced Search . How to search using a chemical name There are two different situations which arise. In the first instance you know the exact name of the compound. This is generally the case with simple compounds, or compounds with trade names.