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| | | | |  | Hafnium(IV) n-butoxide 99% (purity excludes ~1% Zr) | C16H36HfO4 | 667943 | pricing | |  | Hafnium(IV) tert-butoxide 99.99% trace metals basis (purity excludes ~2000 ppm zirconium.) | C16H36HfO4 | 445541 | pricing | |  | Tetrakis(1-methoxy-2-methyl-2-propoxy)hafnium(IV) electronic grade, 99.99% trace metals basis | C20H44HfO8 | 568171 | pricing | | |