On the Detection of Cyanopropyne in the ISM

Cyanopropyne, CH3C3N, also known as methylcyanoacetylene or methylpropionitrile, has been detected with the 45 m NRAO telescope in the J = 6 – 5 to 8 – 7 transitions with K = 0 and 1 between 27.7 and 33.1 GHz in emission toward TMC-1, by
N. W. Broten, J. M. MacLeod, L. W. Avery, W. M. Irvine, B. Höglund, P. Friberg, and Å. Hjalmarson,
Detection of Interstellar Methylcyanoacetylene
Astrophys. J. 276, L25–L29 (1984).
In addition, the J = 5 – 4, K = 0 transition was barely detected.


Contributor(s): H. S. P. Müller; 08, 2012