Internal Standard ASTM D-5307 Back Catalog number: 51124 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2601.16-10MG 1,2,3,6,7,8-Hexahydropyrene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 1732-13-4 Price on request 673363 Flurochloridone, 100 µg/ml, Acetonitrile, 5ml Price on request 73638 Amfepramone Price on request