CAS Source Index (CASSI) Search Tool
https://origin-cassi.cas.org/guidelines.jspCASSI Data Usage Guidelines. This page states the "Usage Guidelines" for the CAS Source Index (CASSI) Search Tool. For the purposes of these Usage Guidelines, the terms "You" and "User" refer to anyone who is accessing, viewing, or otherwise using CASSI. By accessing, viewing, or otherwise using CASSI, you agree to abide by these Usage Guidelines.