KHP Back Catalog number: 50257 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3800.12-100-IO 3'-Fluoro-2,4,4',5-tetrachlorobiphenyl, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 681707 Methotrexate hydrate, 100mg Price on request 677845 Dometrizole, 100mg Price on request