Fentanyl Back Catalog number: 96500 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72064 Diethyl phthalate-d4 Price on request 52077 Instrument Standard 1 Price on request VHG-PTEN-500 Te, 1000 µg/mL in 5% HNO3, 500ml Price on request