From Newsgroup: talk.origins


https://www.chemistryworld.com/news/more-than-20-organic-compounds-found-on-mars-many-for-the-first-time/4023329.article

An international team of researchers has
identified more than 20 organic molecules
in clay-bearing sandstones on Mars that are
about 3.5 billion years old. The compounds
discovered include benzothiophene rCo a known
component of meteoritic macromolecular carbon
that represents the largest confirmed
underivatised aromatic molecule to be
identified as indigenous to the Red Planet. The
ester methyl benzoate was also detected, along
with naphthalene, as well as single and dicyclic
aromatic molecules. Finding these substances on
Mars, including several widely considered
building blocks for the origin of life on Earth,
suggests that prebiotic chemistry could have
existed there once.

The Curiosity rover detected aromatic and cyclic
molecules with methyl and ester/carboxylic acid
functional groups, and sulfur-, oxygen-, and
nitrogen-bearing organics, including the first
discovery of a possible N-heterocycle on Mars.
The rover identified these organic molecules
using its suite of on-board instruments.

Of the more than 20 molecules detected, the team
was able to confirm the identity of seven, most of
which had never been detected on Mars previously.
Team leader Amy Williams, a geobiologist and
organic geochemist at the University of Florida,
says that a nitrogen heterocycle Curiosity found
is rCyreally intriguingrCO because of its apparent
similarity to a molecule considered a precursor
for RNA and DNA. Spectra from Curiosity are
consistent with dimethylindole.


These complex chemicals could have been generated
geologically or biologically on Mars, or they could
have been formed on meteorites and been delivered
to the planet, Williams explains.
...


https://www.nature.com/articles/s41467-026-70656-0
Diverse organic molecules on Mars revealed by the
first SAM TMAH experiment

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