(2E,4Z)-4-hydroxy-6-oxohexa-2,4-dienoic acid
(2e,4z)-4-hydroxy-6-oxohexa-2,4-dienoic acid
A muconic semialdehyde that is hexa-2,4-dienoic acid substituted at positions 4 and 6 by hydroxy and oxo groups respectively (the 2<i>E</i>,4<i>Z</i>-isomer).