“Development and Validation of RP-HPLC Method For Simultaneous Determination of Guaifenesin Impurities in Multi Drug Combinations” (2014) Global Journal of Medical Research, 14(B2), pp. 27–34. Available at: https://medicalresearchjournal.org/index.php/GJMR/article/view/564 (Accessed: 21 February 2026).