CWA Color Back Catalog number: 55140 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677398 D5-Atrazine-desisopropyl, 100 µg/ml, Acetone, 1m Price on request 2540.7-K-ME Paraxanthine, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 611-59-6 Price on request 2398.8-K-IPX5 3,4-Dimethylphenol-2,5,6-d3-OD, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-5, Cas.no. 19031-58-4 Price on request