Chem Sci Trans., 2014, 3(3),  pp 929- 936  

Research Article

Quantification of Genotoxic Impurity 2-Butyl p-toluene- sulfonate at ppm Level by LC-MS/MS in Naproxen Drug Substance

M. B. V. NARAYANA^1*, K. B.CHANDRASEKHAR² and B. M. RAO³

¹1Analytical Research, Matrix Laboratories Limited, Hyderabad-500 072, India
²2Department of Chemistry, Jawaharlal Nehru Technological University College of Engineering, Anantapur-515002, India
³3Analytical Research, Johnson and Johnson Ltd., Mumbai-400080, India