4,4’-DDD Back Catalog number: 79290 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 95554 Semi-Volatile Mix #1 Price on request 11087.7-100MG 2-Ethylpyridine,neat,neat,100mg, Price on request 2031.12-50-T 2,7-Dichlorodibenzo-p-dioxin, 50µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 33857-26-0 Price on request