1,2-Benzofluorene Back Catalog number: 73442 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8509.18-K-IO 1,1,1,3,16,18,18,18-Octachlorooctadecane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 92654 Organic Surrogate Standard Price on request 2795.27-10MG 5 alpha(H)-Cholestan-3ß-ol, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 80-97-7 Price on request