Reports on the Detection of 1,3,5-Heptatriyne in the ISM

The 1,3,5-heptatriyne molecule CH₃C₆H, aka methyltriacetylene, has been identified in spectra recorded toward TMC-1 by
A. R. Remijan, J. M. Hollis, L. E. Snyder, P. R. Jewell, and F. J. Lovas,
Methyltriacetylene (CH₃C₆H) toward TMC-1: Presently the Largest Detected Symmetric Top
Astrophys. J. 643, L37–L40 (2006).