Spiking Standard 5 Back Catalog number: 53071 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71043 2,3-Dimethylpyrazine Price on request MT4CPME Tris(4-chlorophenyl)methanol-[13C19], 1.2ml x 50ug/ml, nonane Price on request 9400.19-10MG Doxepin hydrochloride Price on request