QC-21 Back Catalog number: 59162 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1230.26-100-IO d2 C26 Triaromatic Sterane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 683743 Carboxin-sulfoxide, 10mg Price on request 92710 Acetophenone & Benzophenone Price on request