Phosphoric acid vinyldimethyl ester

    Parameter     ppm  Hz

      D(A)         6.581
      D(B)         4.885
      D(C)         4.570
      D(X)         3.02
       J(A,B)         13.49
       J(A,C)          6.04
       J(A,X)          6.61
       J(B,C)         -1.91
       J(B,X)          1.14
       J(C,X)          2.85
     
      D(D)         3.78
      D(X)         3.02
       J(D,X)         11.5
     
     GAYDOU,E.M. & LLINAS,J.R. ORG.MAGN.RESON. 6, 23 (1974)
     P-31 REFERENCE:85% H3PO4 EXT.