Butenoic acid

Source: Wikipedia, the free encyclopedia.
Isomers of butenoic acid
Crotonic acid
Isocrotonic acid
3-Butenoic acid

Butenoic acid is any of three monocarboxylic acids with an unbranched 4-carbon chain with 3 single bonds and one double bond; that is, with the structural formula HO(O=)CCH=CHCH
2
–H (2-butenoic) or HO(O=)CCH
2
CH=CH–H (3-butenoic). All have the chemical formula C
3
H
5
COOH
or C
4
H
6
O
2
.

These compounds are technically mono-unsaturated fatty acids, although some authors may exclude them for being too short. The three isomers are:

See also

References