1-Butene Back Catalog number: 71677 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 58133 Arsenic (As) Price on request 0191.4-1ML 2-Butanethiol, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 513-53-1 Price on request 32252 1,1,1-Trichloroacetone Price on request