\\ Species Tag:        &   54007 & Name:&  HCCCHO    
\\ Version:            &       1 & & Propynal or
\\ Date:       &  Jan. 1996      & & Propiolic aldehyde
\\ Contributor:&  J. C. Pearson  & & 
\\             &                 & & 
\\ Lines Listed:       &    8407 & Q(300.0)=&    19562.548 
\\ Freq. (GHz) $<$     &    2000 & Q(225.0)=&    13737.474 
\\ Max. J:             &      50 & Q(150.0)=&     7922.005 
\\ LOGSTR0=            &    -8.0 & Q(75.00)=&     2856.363 
\\ LOGSTR1=            &    -8.0 & Q(37.50)=&     1010.200 
\\ Isotope Corr.:      &         & Q(18.75)=&      357.654 
\\ Egy. (cm$^{-1}$) $>$&     0.0 & Q(9.375)=&      126.904 
\\ $\mu_a$ = & 2.39              & A=& 68035.3
\\ $\mu_b$ = & 0.60              & B=&  4826.3
\\ $\mu_c$ = &                   & C=&  4499.5
\headend 

The experimental measurements were taken from: J. A. Howe and J. H.
Goldstein, J. Chem. Phys. {\bf 23}, 1223 (1955). C. C. Costain and R.
J. Morton, J. Chem. Phys. {\bf 31}, 389 (1959). G. Winnewisser, J. Mol.
Spect. {\bf 46}, 16 (1973). The dipole moment comes from Howe and
Goldstein, above.

Propynal is a known interstellar molecule first detected in 1988 by W. M.
Irvine, R. D. Brown, D. M. Cragg, P. Friberg, P. D. Godfrey {\it et al.},
Astrophys. J. {\bf 335}, L89 (1988).