1,2,3,4-Tetramethylbenzene Back Catalog number: 70491 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 96869 Heptachlor epoxide Price on request 9865.17 alpha-Hydroxyalprazolam , , Solvent-, Unit , # of units-, Cas.no. 37115-43-8 Price on request 673735 Atrazine, 100 µg/ml, Ethyl acetate, 5ml Price on request