4,4’-DDD Back Catalog number: 79148 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11365.6-100MG N-Nitroso-4-(2-hydroxyethyl)-piperazin-2-one,neat,neat,100mg, Price on request 11374.12-K-IO 2-Nitrodibenzothiophene,1000 µg/mL,isooctane,1mL, Price on request C10665200 Brilliant Blue FCF (E133), certified, 0.25g Price on request