The status of the 12-atom molecule propionamide (C2H5CONH2)
is under dispute. In 2021,
Li and co-workers
reported the tentative detection of propionamide toward
Sgr B2(N1E)
on the basis of 7 pairs of rotational transitions reflecting A-E splitting. They remeasured the spectrum of
propionamide over a wider frequency range than previous work. The detection used observations made with the
IRAM 30m radio telescope as collected in the
ReMoCA survey of
Belloche and co-workers.
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