Registry Lookup Service

The CAS Registry Lookup Service is available to help you find substance information for an exact computer match of chemical name or CAS Registry Number®.

Submit your request and receive the substance identification information you need within 24 hours (excluding weekends and holidays). There is a $48 USD charge per item searched.

All requests are kept strictly confidential.

Please email the Registry Lookup Service Order Form to answers@cas.org

Call us at 1-800-631-1884 (North America) or 614-447-3870 (worldwide) if you have questions.

 

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