4,4´-Diamino-3,3´-dimethyldiphenyl methane, certified, 0.1g Back Catalog number: C12194800 Availability: In the manufacturer's stock Price on request - + Recommended LCS-4045 LC Caffeine Standards Kit, 6 x 10ml Price on request 90518 Phenols Standard Price on request 677731 1-Naphthol, 500mg Price on request