Benzidine Back Catalog number: 94759 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679811 Sulfaguanidine monohydrate, 100 µg/ml, Methanol, Price on request 0137.12-K-IO 2-n-Octylthiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 880-36-4 Price on request 675865 3-Methylhippuric acid, 100mg Price on request