Update

2024/04/02

NEW The latest version is on 2 April 2024. C2H3+ was newly detected. The 303 molecules have been detected so far.

2024/03/28

The latest version is on 28 March 2024. CH3OCH2CH2OH was newly detected. The statuses of l-HC4H, l-HC6H, and C6H6 were corrected to "detected." The 302 molecules have been detected so far.

2024/03/25

The latest version is on 25 March 2024. Isobutene ((CH3)2C=CH2) was been detected in 2023. Status of Propanal was corrected to be "detected."

2024/03/04

The latest version is on 04 March 2024. The thiofulminic acid (HCNS) was newly detected. The 296 molecules have been detected so far.

2023/10/06

The latest version is on 10 October 2023. Overlap count for the trans-isomer monothioformic acid (t-HC(O)SH) was corrected, as this has been found in 2021.

2023/09/25

The latest version is on 25 September 2023. The trans-isomer monothioformic acid (t-HC(O)SH) was newly detected.

2023/09/06

The latest version is on 06 September 2023. Carbonic Acid (HOCOOH) was newly detected.

2023/08/29

The latest version is on 29 August 2023. NH2C(O)CH2OH, H2CCCH+, and H2CCCN were newly detected.

2023/06/25

The latest version is on 25 June 2023. HSO was newly detected.
Thanks to the adivice of a user of this website, the detected year for C2H5SH, the reference of HC4NC, and the Journal page of HCCNCH+ were added or corrected.

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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.