2,2',3,4,4',5-Hexachlorobiphenyl (137) Back Catalog number: 66137 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9289.15-100-MEX5 O-Desmethyl tramadol-d6 (racemic) , 100µg base/mL, Solvent-methanol, Unit 1mL, # of units-5, Cas.no. 16412-54-7 Price on request 674654 Iopromide, 100mg Price on request D454655-1MG 3,4-Dihydroxyphenylglycolaldehyde (Dopegal), 1mg Price on request