Cas Registry Database Download Repack May 2026

The U.S. Environmental Protection Agency (EPA) provides a downloadable version of the non-confidential TSCA Inventory . This dataset includes thousands of chemicals with their associated CAS Registry Numbers and is available in CSV or Excel formats via the EPA website.

Users with a SciFinder subscription can perform substance searches and use the Download icon to export results. You can choose formats like Excel (.xlsx) , PDF , or SDFile (.sdf) for chemical structures. Downloads are typically limited to the first 100–500 results depending on the detail level selected. cas registry database download

For users who only need a few specific numbers and do not want a subscription, the CAS Registry Lookup Service allows you to submit a request for a specific substance. If the substance is in the registry, CAS will provide a print of that record within 24 hours. Comparison of Access Methods Access Method Typical Format Researchers & Academics Excel, PDF, SDF STNext Patent Searchers RTF, XML, Text Common Chemistry Public/Student Use Web View, Molfile EPA TSCA Regulatory Compliance CSV, Excel Users with a SciFinder subscription can perform substance

Instead, users can access and download specific subsets of the data through various official platforms and licensing agreements. 1. Official Methods to Download CAS Registry Data For users who only need a few specific