Purba , Intan Sabila Putri, Supiyani Supiyani, Haris munandar Nasution, and Minda Sari Lubis. “Analysis of Nicotine Content and Identification of Bioactive Compounds in Gayo-Origin Tobacco Leaf (Nicotiana Tabacum L.) Extract Using GC–MS and Titration”. Journal of Pharmaceutical and Sciences 8, no. 4 (November 17, 2025): 2662–2673. Accessed November 24, 2025. https://journal-jps.com/new/index.php/jps/article/view/1161.