106372-94-5 14323-64-9 420-37-1 EINECS 206-994-4 NSC 528455 Oxonium, trimethyl-, tetrafluoroborate(1-) Trimethoxonium fluoroborate Trimethyloxonium fluoroborate Trimethyloxonium tetrafluoroborate Trimethyloxonium tetrafluoroborate(1-)