3,3’-Dimethylbenzidine Back Catalog number: 90898 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 95053 EPA Method 527 Surrogate Standard Price on request 12010.9-100MG (±)-Vanillomandelic acid,neat,neat,100mg, Price on request 96346 Phthalate Standard Price on request