Pyrene Back Catalog number: 90981 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2293.9-1G Trimellitic acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 528-44-9 Price on request 38166 CWA BTEX & MTBE Price on request 678215 D4-Propyl paraben, 100 µg/ml, Methanol, 1ml Price on request