Quantification of
13C,
15N labelled compounds with
13C,
15N edited
1H Nuclear Magnetic Resonance spectroscopy.
Talanta 2021;
224:121839. [PMID:
33379057 DOI:
10.1016/j.talanta.2020.121839]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/15/2020] [Accepted: 10/28/2020] [Indexed: 10/23/2022]
Abstract
It was significant to detect isotope labelled compounds in biology and pharmacy. Based on a novel 1H Nuclear Magnetic Resonance (1H-NMR) technique, a simple, fast and green method has been successfully established to quantitatively detect 13C, 15N isotope labelled compounds. In this protocol, the couples between 1H and 13C, 15N nearby were removed, which greatly simplified the spectrum. At mean time, the multiple peaks led by 13C and 15N were combined into one peak, so the signal intensity was also significantly enhanced. Melamine was selected as the internal standard and five 13C, 15N isotope labelled compounds showed excellent linearity from 0.001 mM to 100 mM. A real polypeptide sample has quantitatively been detected.
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