Benzidine Back Catalog number: 43024 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679749 Estrone, 250mg Price on request 92280 EPA Method 8081A Pesticides QC Mix Price on request 2277.5-1ML Pyridine, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 110-86-1 Price on request