Weekly digest of cutting edge research
CAS Registry file - Substances searchable through SciFinder Scholar - Search by "Chemical Substance." (see above)
SciFinder Scholar is the most important chemistry database for articles, patents, & documents in all languages.
You need to register for 1st time use; then you'll receive a login ID for future use.
After receiving your login ID, then you can sign in any time you like!
Consult the SciFinder tab above for more in-depth help.
More specific than Google: