QC Standard 1 Back Catalog number: 52084 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0005.21-10MG 3-Methylcholanthrene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 56-49-5 Price on request 43024 Benzidine Price on request 1090.14-K-IO 9-Methylfluorene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2523-37-7 Price on request