1-Butene Back Catalog number: 71677 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9173.23-K-DMF Morphine-3-glucuronide, 1000µg base/mL, Solvent-DMF, Unit 1mL, # of units-1, Cas.no. 20290-09-9 Price on request 92349 SS Aroclor Standard Mix 1 Price on request 33265 Trichloroacetic acid Price on request