CAS Common Chemistry Needed update

[vfscalfani]

Describe the Notebook Issue

The CAS Common Chemistry API now requires an API key to retrieve data from the API. Users would need to request their own API key from CAS: https://www.cas.org/services/commonchemistry-api

I believe some of the data output/ variable naming has also changed.

https://iupac.github.io/WFChemCookbook/datasources/cas_commonchem.html

If you have a suggestion on how to fix this issue, please describe it here.

For now, there is an updated CAS Common Chemistry API tutorial, which shows how to use an API Key available here (for local setup): https://ua-libraries-research-data-services.github.io/UALIB_ScholarlyAPI_Cookbook/src/python/casc.html

[stuchalk]

Thanks Vin. I will work on this next week...