Color Back Catalog number: 54255A Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 73497 2,4,6,8-Tetramethyl-2,4,6,8-tetraazabicyclo[3.3.0]-3,7-oxandione Price on request 9064.7-K-IP 4-Chloroguaiacol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 16766-30-6 Price on request 674442 2,3,5-Trimethacarb, 10.0 µg/ml, Acetonitrile, 10 Price on request