API Dossier Structure in CTD Format Explained: Ultimate Guide to Global Submissions and Compliance Mastering API Dossier Structure in CTD Format: Compliance-Ready Guide for Regulatory Affairs Professionals Introduction to API Dossier Structure and Its Importance The Common Technical Document (CTD) is the globally harmonized format developed by the International Council for Harmonisation (ICH) to standardize regulatory submissions across multiple markets. For Active Pharmaceutical Ingredients (APIs), structuring dossiers in CTD format ensures transparency, consistency, and efficiency in regulatory evaluations by agencies such as the FDA, EMA, and CDSCO. By 2025, API dossier preparation in CTD format has become mandatory in most…