Acetamide, CH3C(O)NH2, has been identified in
spectra recorded toward Sgr B2(N) by
J. M. Hollis, F. J. Lovas, A. R. Remijan, P. R. Jewell, V. V. Ilyushin, and I. Kleiner,
Detection of Acetamide (CH3CONH2):
the Largest Interstellar Molecule with a Peptide Bond
Astrophys. J. 643, L25L28 (2006).