Update

2024/04/24

NEW The latest version is on 24 April 2024. O-protonated carbonyl sulfide HOCS+ was newly detected. The 304 molecules have been detected so far.

2024/04/02

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.

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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.