Update

2023/05/25

NEW The latest version is on 25 May 2023. C4H5CN was newly detected. Double counting for H2NCO+ was corrected.
The 290 molecules have been detected so far.

2023/05/04

The latest version is on 04 May 2023. HMgCCCN, NaCCCN, MgC4H+, MgC3N+, MgC6H+, and MgC5N+ were newly detected.

2023/03/27

The latest version is on 27 March 2023. CH3CHCO was newly detected.
The 284 molecules have been detected so far.

2023/03/06

The latest version is on 06 March 2023. C7N- was newly detected.
The 283 molecules have been detected so far.

2023/03/02

The latest version is on 02 March 2023. C10H- was newly detected.
The 282 molecules have been detected so far.

2023/02/06

The latest version is on 06 February 2023. NC4NH+ and CH2CHCHNH were newly and tentatively detected, respectively.
The 281 molecules have been detected so far.

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This site is edited by Mitsunori Araki, Max-Planck-Institut fuer extraterrestrische Physik. E-mail:

■ Sortable for numbers of atoms, species of atoms included, functional groups and detected years
■ References of the first detections are linked.
■ Clouds, telescopes, and column densities for the first detections are listed.
■ For details, see a readme sheet in the Excel file.
■ CAUTION: This list includes tentatively detected molecules. Check the status column.