===== Detection of Formyl Cyanide in the ISM =====

Formyl cyanide, aka cyanoformaldehyde, HC(O)CN, was detected toward Sgr B2(N) in five transitions having //J+1//<sub>0,//J+1//</sub> ↔ //J//<sub>1,//J//</sub> with //J// = 5 – 9:\\
A. J. Remijan, J. M. Hollis, F. J. Lovas, W. D. Stork, P. R. Jewell, and D. S. Meier,\\
**[[https://doi.org/10.1086/533529|Detection of Interstellar Cyanoformaldehyde (CNCHO)]]**\\
//Astrophys. J.// **675**, L85–L88 (2008).\\

J. Cernicharo, C. Cabezas, Y. Endo, M. Agúndez, B. Tercero, J. R. Pardo, N. Marcelino, and P. de Vicente\\
report on\\
**[[https://doi.org/10.1051/0004-6361/202141297|The Sulphur Saga in TMC-1: Discovery of HCSCN and HCSCCH]]**\\
//Astron. Astrophys.// **650**, Art. No. L14 (2021).\\
Formyl cyanide was indentified besides these two new and several other molecules. HC(O)CN was identified through 2 //a//-type transitions with //K<sub>a</sub>// = 0 and //J// = 4 − 3 or 5 − 4. The identifications were made in the course of an ongoing unbiased molecular line survey between 31.1 and 50.4 GHz using the Yebes 40 m radio telescope. The column density ratio of propynal and formyl cyanide is about 4.\\

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Contributor(s): H. S. P. Müller; 03, 2008; 06, 2021

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