Surrogate Standard Back Catalog number: 91625 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2517.8-500MG Caffeine, neat, Solvent-neat, Unit 500mg, # of units-1, Cas.no. 58-08-2 Price on request 79608 1,6-Dimethylnaphthalene Price on request 10900-0460-100ME2 Dichloromethane, 100µg/ml in MeOH, 2ml Price on request