Mix A Back Catalog number: 50050 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2538.14-100-ME Naproxen, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 22204-53-1 Price on request 83591 2,3,5,6-Tetrachloroterephthalic acid Price on request 674570 Swep, 100 µg/ml, Acetonitrile, 5ml Price on request