Heptachlor epoxide (isomer B), 1000µg/ml in MeOH, 1ml Back Catalog number: 70193 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 8779.14-10MG Di-n-propyl phthalate, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 131-16-8 Price on request 2074.6-K-IP 2,3,5,6-Tetrachlorophenol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 935-95-5 Price on request X9192 1,2,4,5-Tetrachlorobenzene Price on request