The Department of Homeland Security, specifically the Office of Procurement Operations within the Cybersecurity and Infrastructure Security Agency (CISA), is seeking to renew its subscription to the Chemical Abstracts service through a sole source justification. This subscription is critical as it provides subject matter experts with access to comprehensive chemical information, enhancing their ability to analyze data and make informed recommendations that support national security policy decisions. The procurement emphasizes the importance of this service in facilitating effective decision-making within the DHS. For further inquiries, interested parties can contact Charnelle Brown at charnelle.brown@hq.dhs.gov.