g-Butyrolactone

ISO 15009 Stock Internal Standard Solution for Aromatic Hydrocarbons 2 Analytes, each 2000µg/mL in methanol; unit: 1x5mL 2253.7 Toluene-d8 [2037-26-5] 2171.8 Ethylbenzene-d10 [25837-05-2]

Tetrabenzo[de,h,kl,rst]pentaphene, Please inquire, Solvent-, Unit , # of units-, Cas.no. 188-13-6

N-Nitrosodiisopropylamine, 1000µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 601-77-4