4,4'-Diaminobiphenyl-d8 (Rings-d8) Back Catalog number: 10448.12-K-IO Manufacturer: CHIRON AS Availability: 3 weeks Price on request - + Recommended 30003 EPA Method 500 Series Internal Std #4 Price on request 8984.8-200-MEX5 2,4-Dimethylaniline Price on request 71823 1-Chloro-3,4-dinitrobenzene Price on request