o-Xylene, 1000µg/ml in MeOH, 1ml Back Catalog number: 70307 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9330.8-100MG N-Nitrosodiisobutylamine, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 997-95-5 Price on request 674663 Iohexol, 100mg Price on request 680424 13C3-Caffeine, 10mg Price on request