EPA Method 515.1Methyl Derivatives Back Catalog number: 30044 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended M338792-1MG rac Metoprolol-d7, 1mg Price on request DLM-2136-1.2 Benzo(b)fluoranthene (D12,98%), 200µg/mL in Isooctane, 1,2ml Price on request 11413.19-K-ME Dosulepin,1000 µg/mL,MeOH,1mL, Price on request