Methotrexate Back Catalog number: 72209 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1846.20-1G 1-Pyrenebutyric acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 3443-45-6 Price on request 52002 Nitric Acid Blank Price on request 9065.8-K-IP Trichlorosyringol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 2539-26-6 Price on request