4,4’-Diamino-3,3’-dimethyldiphenylmethane Back Catalog number: 71378 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended EPA-23CS3 Calibration Verification Solution, 1ml, nonane Price on request 79209 trans-Nonachlor Price on request 1283.19-10MG 5 alpha(H)-Androstan-3ß-ol, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 1224-92-6 Price on request