Mumbai, June 18 -- Torrent Pharmaceuticals Ltd dropped for a fifth straight session today. The stock is quoting at Rs 4426.6, down 0.36% on the day as on 13:19 IST on the NSE. The benchmark NIFTY is up around 0.13% on the day, quoting at 24116.9. The Sensex is at 77301.67, up 0.19%.Torrent Pharmaceuticals Ltd has eased around 0.75% in last one month.Meanwhile, Nifty Pharma index of which Torrent Pharmaceuticals Ltd is a constituent, has eased around 2.88% in last one month and is currently quoting at 24146.55, up 0.01% on the day. The volume in the stock stood at 1.31 lakh shares today, compared to the daily average of 5.7 lakh shares in last one month. The benchmark June futures contract for the stock is quoting at Rs 4443.7, down 0.39% ...