CAS Inventory Expert Services

The CAS Inventory Expert Service (IES) helps you obtain CA Index Names and CAS Registry Numbers® in order to complete your EPA TSCA PMN application under the Revisions of Premanufacture Notification Regulations: Final Rule.

Contact us

CAS service professionals are available to answer questions and help you with requests.

800.631.1884 (North America)
614.447.3870 (Outside North America)
‍answers@cas.org

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