What is still missing?
H
2
C CH
3
7.14 Hz
4.13
ppm
1.22
ppm
6.3 5.76.2 6.1 6.0 5.9 5.8
1588.91
1587.25
1571.60
1569.94
1522.65
1512.30
1505.35
1495.00
1437.73
1436.07
1427.38
1425.72
Hz
C
5
H
8
O
2
molecular formula: found so far: - C
2
H
5
On the one hand, we got 2 double bond equivalents (DBE) from the
molecular formula, none of which has been assigned so far, and on
the other hand, a residue C
3
H
3
O
2
remains after the ethyl group has
been subtracted.
missing: 2DBE + C
3
H
3
O
2
C
5
H
8
O
2
measured in CDCl
3