2,3-Benzofluorene Back Catalog number: 93156 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11224.6-100-IO 1H-Benzotriazole-4,5,6,7-d4,100 µg/mL,isooctane,1mL, Price on request 24002 EPA Method 8240A - Purgeable Surrogate Std Price on request 679334 N-Ethyl-p-toluenesulfonamide, 250mg Price on request