描述：本品类由xian齐岳shengweu提供！DOTA-PEG-COOH（COOH-PEG-DOTA, Tetraxetan-PEG-Carboxyl）是一种由四氮杂环螯合剂（DOTA）、聚乙二醇（PEG）和羧基（COOH ...

MANY methods have already been described for the selective degradation of peptides from the carboxyl end 1. However, the several chemical steps involved in those procedures do not allow their ...

They play a crucial role in the structure, function, and regulation of the body's tissues and organs. Amino acids are characterized by their central carbon atom, known as the α-carbon, which is bonded ...