Internal Reference Standard Back Catalog number: 52187 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673844 D9-Chlormequat Chloride, 100 µg/ml , Deuterium ox Price on request 673882 Paraoxon-ethyl, 100 µg/ml, Cyclohexane, 5ml Price on request 10916.27-10MG (±)-Verapamil-d3 hydrochloride (N-methyl-d3) ,neat,neat,10mg Price on request