1-Butene Back Catalog number: 71677 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 685735 Fensulfothion-sulfone, 100µg/ml in Acetonitrile, 1 Price on request 55104 RCRA Hexavalent Chromium Price on request 1551.21-K-IO n-Heneicosane-d44, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 39756-37-1 Price on request