ACSI (ACS International, Ltd.) is a wholly-owned subsidiary of the American Chemical Society (ACS). ACSI professionals provide the highest quality representation and support for ACS products and services, including:

ACS Publications manages the scholarly publishing program of the world’s largest and most influential scientific society. Every year over 100,000 authors and their research teams from the community of scientists worldwide submit their work for consideration, review, and publication to ACS Publications.


Noted for their high quality, rapid time to publication, seminal, and high impact, and prevalent citation in future research, ACS journals are available at more than 5,000 academic, business, and corporate institutions worldwide. ACS Publications also publishes Chemical & Engineering News – a print and online news magazine covering the global chemical enterprise and related sciences.

SciFinder: Only SciFinder® provides researchers with unlimited access to the world’s largest and most reliable collection of chemistry and related science information. SciFinder offers a one-stop shop experience with flexible search and discover options based on user input and workflow. You can search for substances, reactions, and patent and journal references within the authoritative chemical and related content from CAS anytime, anywhere.

STN: Trusted and relied upon by patent offices and IP professionals worldwide, STN is the premier single source for the world's disclosed scientific and technical research. It is the only platform with complete CAS content, Derwent World Patents Index® (DWPISM) and the INPADOC family of databases. The STN family of products combines industry-leading search and retrieval with unique and comprehensive content.

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