N-methyl-N-(t-Boc)-PEG-acid is a highly versatile compound that has gained significant attention in the field of pharmaceutical research and development. It belongs to the class of polyethylene glycol (PEG) derivatives and is widely used as a chemical building block for the synthesis of various bioconjugates and drug delivery systems. N-methyl-N-(t-Boc)-PEG-acid possesses a unique combination of properties, including water solubility, biocompatibility, and a high degree of chemical reactivity, which make it an ideal candidate for various applications in the pharmaceutical industry. In this context, N-methyl-N-(t-Boc)-PEG-acid is used to develop novel drug delivery systems that can improve drug efficacy and reduce toxicity, as well as to conjugate drugs to various targeting moieties, such as antibodies or peptides, to enhance their selectivity and specificity. Therefore, N-methyl-N-(t-Boc)-PEG-acid represents a promising tool for the development of new and effective therapies for various diseases.