4,4’-Diamino-3,3’-dimethyldiphenylmethane Back Catalog number: 94728 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70004 Base/Neutrals Extractables Mix #4 - MISA Price on request 55206 Cyanide Total & PAC - Water Price on request 675720 Heptachlor-exo-epoxide, 100 µg/ml, Ethyl acetate, Price on request