1,4-Difluorobenzene Back Catalog number: 70155 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1706.9-K-AN DL-N-Nitrosonornicotine-d4, 1000µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 66148-19-4 Price on request XA14470000AL Isoproturon, 100µg/ml n Acetonitrile, 1ml Price on request 30009 EPA Method 503.1 VOC's Price on request