2,4-DB Back Catalog number: 83563 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92171 Ethanol Price on request 1699.20-200-T 1-n-Butylpyrene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 35980-18-8 Price on request 70134 Dichlorodifluoromethane, 1000µg/ml in MeOH, 1ml Price on request