Methotrexate Back Catalog number: 72209 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92060 8260 Internal & Surrogate Standard Price on request 2286.16-K-IO Ethylene glycol mono(p-n-octylphenyl) ether, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 51437-89-9 Price on request MDD-0 [13C12]Dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene Price on request