Propionic acid isobutyl ester Back Catalog number: 71648 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1801.24-100-T p-Quaterphenyl, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 135-70-6 Price on request 3532.12-K-IO Cyclododecane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 294-62-2 Price on request 10638.12-50-T 1,2,3,4,6,7,8-Heptabromodibenzofuran Price on request