cis-2-Butene Back Catalog number: 72428 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3209.18-K-IO 6-cis,9-cis,12-cis-Octadecatrienoic acid , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 506-26-3 Price on request 57914 Silicon (Si) Price on request 1606.13-100-T 2-Fluorodiphenylmethane, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 3794-15-8 Price on request