Benzidine Back Catalog number: 94737 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2625.34-10UG 17 alpha(H),21ß(H)-(22RS)-Tetrakishomohopane , neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 67069-13-0 Price on request 10437.2-5MG O,O-Dimethylthiophosphate, sodium salt, 5mg Price on request 94418 Toxaphene with TCMX & DCB Price on request