Amidogen was detected with ALMA within cycle 0 observations in the unnamed foreground
galaxy at z ≈ 0.89 toward the blazar PKS 1830211
S. Muller, F. Combes, M. Guélin, et al.,
An ALMA Early Science survey of molecular absorption lines toward PKS 1830211 Analysis of the absorption profiles
Astron. Astrophys. 566, (2014) Art. No. A112.
The strongest J = 1.5 1.5 and the weaker 1.5 0.5 fine structure components of the 110 101 transition of para-amidogen at 462446.5 and around 461440 MHz were detected in absorption, the latter with partially resolved 14N hyperfine splitting.