C
4
H
4
O
Related molecular formulas
C
4
H
6
O
C
3
H
2
O
C
4
H
4
O
C
5
H
6
O
C
4
H
2
O
C
4
H
4
C
4
H
4
O
2
The
molecular formula
C
4
H
4
O
may refer to:
Theoretical isomers of C
4
H
4
O showing tautomerisation
Butynone
1,3-Butadienal
Cyclobutenone
Furan
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