Instrument Standard 4 Back Catalog number: 52080 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 12115.12-100-ME (±)-Sotalol-d6 hydrochloride (dimethyl-d6),100 µg/mL,MeOH,1mL, Price on request 677923 Pyrethrins, 10 µg/ml, Ethyl acetate, 10ml Price on request 676674 D7-Metoprolol tartrate, 10mg Price on request