Trimethoprim, certified, 0.25g Back Catalog number: C17875000 Availability: In the manufacturer's stock Price on request - + Recommended 66168 2,3',4,4',5',6-Hexachlorobiphenyl (168) Price on request 38157 CWA Oxygenates Price on request 8707.12-5MG 2,2',3,4',5,5',6-Heptachlorobiphenyl, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 52663-68-0 Price on request