During related substance analysis of montelukast bulk drug, a potential unknown impurity was detected in routine reverse phase impurity profiles by high performance liquid chromatography (HPLC).
Sulfonic Acid Functionalized Wang Resin (Wang-OSO 3H) as Polymeric Acidic Catalyst for the Eco-Friendly Synthesis of 2,3-Dihydroquinazolin-4(1H)-ones. -(DHANUNJAYA RAO, A. V.; VYKUNTESWARARAO, B. P.; BHASKARKUMAR, T.; JOGDAND, N. R.; KALITA, D.; LILAKAR, J. K. D.; SIDDAIAH, V.; DOUGLAS SANASI, P.; RAGHUNADH*, A.; Tetrahedron Lett. 56 (2015) 32, 4714-4717, http://dx.
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