Laboratory rotational spectroscopy and interstellar search for the protein precursor 4-oxobutanenitrile (HCOCH2CH2CN). - Rivilla, V M; Alonso, E R; Song, W; Insausti, A; Maris, A; Basterretxea, F J; Melandri, S; Jiménez-Serra, I; Cocinero, E J (Monthly Notices of the Royal Astronomical Society, 2026)