STN Easy and
search key STN databases covering sci-tech information and patents.
Locate information on: chemistry, engineering, patents, medicine,
food and agriculture, and regulatory information.
It's Easy to Start Using STN Easy
No subscription fees!
Pay a low fee ($2.00) for each search you perform, with an additional charge for each answer you display. Invoices are mailed monthly.
Have questions or need more information? Contact CAS Customer Center.