2-Ethyl-1-butene Back Catalog number: 71684 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended SC-474309 Violaxanthin (Mixture of Diastereomers), 1mg Price on request 2989.8-K-ME 2,3,4-Trimethylpentane, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 565-75-3 Price on request 673871 Teflubenzuron, 250mg Price on request