The initial detection of glycolaldehyde (CH2OHCHO) was reported by
Hollis et al. in 2000 in Sgr B2(N) using the
NRAO 12 m telescope.
Their title reflects that glycolaldehyde was the
to be identified.
It was also found in a
colder part of the cloud several years
later with the Green Bank telescope.
Independent obsrvations by Halfen et al. in
2006 also confirmed its presence in Sgr B2(N).