( 2E,4E,6E,8E )-9-(4-methoxy-2,3,6-trimethylphenyl)-3,7-dimethyl-nona-2,4,6,8-tetraenoic acid.

S.F. :

Molecular Formula:  C₂₁H₂₆O₃

Molecular Weight:    M 326.4

Classification :

Be used in the treatment of hyperkeratotic skin diseases such as psoriasis.

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Intermediates: 

一、4-(4-methoxy-2,3,6-trimethyl-phenyl)-but-3-en-2-one

二、4-(4-methoxy-2,3,6-trimethyl-phenyl)-3-methyl-3-hydroxy-pent-1,4-diene