“…Most of these impurities are controlled at the process level itself and the left over if any are eliminated further at consequent stages. Denton et al [1], explored the possibilities of detection and quantification of regioisomer impurities associated with 3-chloro-5-fluorophenol along with other related impurities using the entire gas chromatography area % method. The study discussed several other alternative strategies to control the impurities elated to 3-chloro-5-fluorophenol.…”