CAS 75-83-2 appears in our catalog under these names: 2,2-Dimethylbutane, 2,2-Dimethylbutane, >98.0%(GC), 2,2-DIMETHYLBUTANE, STANDARD FOR GC, Neohexane, Concentration: 100 µg/ml Solvent: Methanol, Neohexane. Offered by: Dr. Ehrenstorfer, TCI, Sigma-Aldrich, HPC Standards, Fluorochem. Available pack sizes: 100mg, 25ml, 100ml, 10ML, 5ML, 1x1ml, 1x100mg, 1g.