M. Sanz-Novo, V. M. Rivilla, I. Jiménez-Serra, L. Colzi, S. Zeng, A. Megías, D. San Andrés, Á. López-Gallifa, A. Martínez-Henares, Z. T. P. Fried, B. A. McGuire, S. Martín, M. A. Requena-Torres, B. Tercero, P. de Vicente, L. Kolesniková, E. R. Alonso, E. J. Cocinero, J. C. Guillemin, and I. Kleiner
reported on the
Expanding the C3H6O2 Isomeric Interstellar Inventory: Discovery of Lactaldehyde and Methoxyacetaldehyde in G+0.693−0.027
Astron. Astrophys. 706, (2026) Art. No. A316.
2-Hydroxypropanal, also known as lactaldehyde, was detected in the course of a molecular line survey of this cold, shocked molecular cloud near Sagittarius B2 and in the Galactic center region. Three transitions with good signal-to-noise ratio (S/N) and one with modest S/N between 32 and 138 GHz were unblended, three further transitions slightly blended. The authors provide column density raios of the C₃H₆O₂ isomers.

Contributor(s): H. S. P. Müller; 03, 2026