2,2',4,5'-Tetrachlorobiphenyl (49) Back Catalog number: 66049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675809 Ethephon, 250mg Price on request 83552 Isophorone-DNPH Price on request 9917.26-100MG Di-iso-nonyl phthalate (C9-alkyl ester isomer mix, mainly one isomer), neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 28553-12-0 Price on request