Surrogate Standard Back Catalog number: 92469 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 73158 Dodecanoic acid Price on request I140004 Ibuprofen-13C,d3, 1mg Price on request 66189 2,3,3',4,4',5,5'-Heptachlorobiphenyl (189) Price on request