Instrument Standard 5 Back Catalog number: 53081 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70053 2-Butanone Price on request 54157 Magnesium (Mg) Price on request 9188.22-100-ME Propoxyphene-d5 hydrochloride, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request