Cations Std. Level 4 Back Catalog number: 59909 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2143.6-1ML Diisopropyl ether, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 108-20-3 Price on request 681844 2-Methyl-1-propanol, 5ml Price on request 679802 Roxithromycin, 100 µg/ml, Methanol, 1ml Price on request