2021-07-21 11:59 Amino acids are a group of chemically diverse organic compounds. The amino acid composition will determine the quality of polypeptides or proteins. As the requirements defined by the United States Pharmacopeial Conventin (USP), European Pharmacopoeia ... дальше
2021-07-21 11:58 Electrospray ionization mass spectrometry is a special soft ionization technology that can generate gas phase ions with multiple charges more gently, reducing the mass-to-charge ratio range of the molecules to be measured. The product ions of multi-c ... дальше
