Interstellar Detection of Methyl Isocyanate CH3NCO in Sgr B2(N): A Link from Molecular Clouds to Comets

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D. T. Halfen et al

The Astrophysical Journal Letters
2015 ApJ 812 L5

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“A new interstellar molecule, CH 3NCO (methyl isocyanate), has been detected using the 12 m telescope of the Arizona Radio Observatory (ARO). CH 3NCO was identified in spectra covering 48 GHz (68–116 GHz) in the 3 mm segment of a broadband survey of Sgr B2(N). […] CH 3NCO was recently detected in volatized material from comet 67P/Churyumov–Gerasimenko by Rosetta’s Philae lander, with an abundance ∼1.3% of water; in Sgr B2(N), CH 3NCO is roughly ∼0.04% of the H 2O abundance.

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