Neosyn Laboratories Inc. Pharmaceutical Precursors Quick links : PCBs Dioxins Pharmaceutical precursors (including azetidines) PP-1 2,6 Dichloro-1-nitro benzene PP-2 2,3,6 Trichloro aniline PP-3 2,3,4 Trichlorophenol PP-4 Chloromethyl octyl ether PP-5 4-Chlorocathecol PP-6 3-5 Dichlorocathecol PP-7 ...