Norfentanyl hydrochloride Back Catalog number: 96502 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 32003 EPA Method 500 Series Internal Std #4 Price on request 79272 2,6-Diaminotoluene Price on request 673217 Butoxycarboxim, 100 µg/ml, Acetonitrile, 5ml Price on request