CAS 877-09-8 appears in our catalog under these names: 2,4,5,6-Tetrachloro-m-xylene, 2,4,5,6-Tetrachloro-m-xylene 10 µg/mL in Cyclohexane, 2,4,5,6-Tetrachloro-m-xylene 100 µg/mL in Methanol, 2,4,5,6-Tetrachloro-m-xylene 2000 µg/mL in Acetone, 2,4,5,6-Tetrachloro-m-xylene, >95% (HPLC). Offered by: Dr. Ehrenstorfer, TRC, Ambeed, Chemat, HPC Standards. Available pack sizes: 100mg, 10ml, 1ml, 250mg, 50mg, 1g, 1x5ml.