2,4-DB-methyl ester, 250mg Back Catalog number: 677496 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 94587 PCB Congeners 1000 ppb Price on request 79536 Vanillin Price on request 2636.28-5UG 17ß(H),21 alpha(H)-28,30-Bisnorhopane, neat, Solvent-neat, Unit ca. 5µg, # of units-1, Cas.no. 83377-28-0 Price on request