AA Standard #2 Back Catalog number: 59228 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9789.10-100ME DL-4-Methylamphetamine hydrochloride, 100µg base/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request 1773.12-100-AN 4,4'-Diaminobiphenyl,100 µg/mL,acetonitrile,1mL, Price on request 2861.7-50-ME 1H,1H,7H-Perfluoroheptan-1-ol , 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 335-99-9 Price on request