CAS 7291-22-7 appears in our catalog under these names: Pyridine D5, Pyridine-d5 (Reagent grade), 99 atom % D, min 99% Chemical Purity, Pyridine-d5, >95% (HPLC), Pyridine–d?, Pyridine-d{5}, 99.5% (Isotopic) . Offered by: Dr. Ehrenstorfer, CDN, TRC, GLPBio, Thermo Scientific (Alfa Aesar). Available pack sizes: 1ml, 5g, 10g, 1g, 10×0,5ml, 2g, 10each, 25g.