1. Click on the Merck Index link and log into the database.
2. Enter the name of the material into the quick search box at the top of the screen and click on the magnifying glass search icon:
3. Find your material within the results list and click on its name to open the full monograph:
4. As can be seen within the above screenshot, CAS registry number information is provided near the top of the monograph:
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.