HNCO

https://doi.org/10.1351/goldbook.08364
Three-dimensional nuclear magnetic resonance spectroscopy for the assignment of protein structure with nitrogen, carbon and hydrogen dimensions.
Note:
Magnetization is passed from A1A221H to A15A2215N and then selectively to the carbonyl A13A2213C via the NHA13A2213CO J-coupling. Magnetization is then passed back via A15A2215N to A1A221H for detection.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 692 [Terms] [Paper]