What question did this study set out to answer?

This work aims to investigate how organosulfur molecules form in space-like conditions.

February 11, 2026Physical Chemistry Chemical Physics4 citations

Formation of dimethyl sulfide (CH 3 SCH 3 ) and ethanethiol (CH 3 CH 2 SH) in interstellar analog ices of methane (CH 4 ) and hydrogen sulfide (H 2 S)

AHAshanie HerathUniversity of Hawaiʻi at Mānoa ATAndrew M. TurnerUniversity of Hawaiʻi at Mānoa MMMason McAnallyUniversity of Hawaiʻi at Mānoa

Key Points

This work aims to investigate how organosulfur molecules form in space-like conditions.
Prepared ices of methane and hydrogen sulfide
Exposed ices to galactic cosmic rays
Analyzed the resulting organosulfur compounds
Dimethyl sulfide and ethanethiol were successfully synthesized
Methanethiol was also identified among the products
Formation occurred under simulated interstellar conditions

Abstract

Organosulfur molecules methanethiol, ethanethiol, and dimethyl sulfide—all identified in the interstellar medium—were first prepared in astrophysically relevant ices of methane and hydrogen sulfide exposed to proxies of galactic cosmic rays. Image from ESA/Hubble & NASA.

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