https://www.selleckchem.com/pr....oducts/catechin-hydr
The structures of all these impurities were characterized based on the high-resolution MS data and manufacture process, and the fragmentation pathways of tetracaine and these impurities were constructed and discussed. Seven of them have not been reported before, and two of them were specified impurities described in various pharmacopoeias. The fragmentation pathways and plausible mechanisms for the formation of these impurities were proposed.Cochlear implants (CIs) provide acoustic information to implanted patients by electrica