WS Organonitrogen Pesticides Back Catalog number: 38129 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9837.8-10MG Valproic acid-d15, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 362049-65-8 Price on request MBP-157 2,3,3',4,4',5'-Hexachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane Price on request 2942.9-100-NN beta-Endosulfan-d4 (1,1,5,5-d4),100 µg/mL,n-nonane,1mL, Price on request