Internal Reference Standard Back Catalog number: 52187 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679137 4-(2-Ethyl-6-methylphenyl)-5-methyl-3-morpholinone Price on request 673618 delta-HCH, 100 µg/ml, Ethyl acetate, 5ml Price on request 2834.5-50-ME 5H-Perfluoropentanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 376-72-7 Price on request