2,3,5-Trichloro-4-(n-propylsulfonyl)-pyridine 2,3,5-Trichloro-4-(propylsulfonyl)pyridine 2,3,5-Trichloro-4-(propylsulphonyl)pyridine 38827-35-9 Caswell No. 882FF Dowicil A-40 EINECS 254-140-4 EPA Pesticide Chemical Code 102801 Pyridine, 2,3,5-trichloro-4-(n-propylsulfonyl)-