CAS Client Services is a fee-based service that offers you several options for confirming and assigning CAS Registry Numbers® (often referred to as CAS RNs or CAS Numbers) and obtaining CA Index Names.
Inventory Expert Service
To obtain CA Index Names and assign CAS Registry Numbers for regulatory chemicals to be included on Premanufacture Notification (PMN) submissions to the U.S. EPA.
Chemist Consultation - Substance Identification
For substance information identification via CAS Registry Number assignment and CA Index Name generation
Registry Lookup Service
For confirmation of chemical names or assignment of existing CAS Registry Numbers
Computer Readable Services
For identifying large numbers of chemical substances including assignment of existing CAS Registry Numbers and retrieval of CA Index Names and CAS synonyms
Contact CAS Client Services
For more information and instructions, including prices, contact CAS Client Services in any of the following ways:
Phone: 800-631-1884 (North America)
CAS Client Services vCard