Isobutene Back Catalog number: 72431 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1445.14-K-IO 4-n-Octylphenol, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1806-26-4 Price on request 79493 Perfluoroheptanoic acid Price on request 92664 1,7-Octadiene Price on request