Sinapaldehyde

Sinapaldehyde

Names
Systematic IUPAC name 3-(4-Hydroxy-3,5-dimethoxyphenyl)prop-2-enal
Other names 3,5-Dimethoxy-4-hydroxycinnamaldehyde Sinapic aldehyde Sinapinaldehyde Sinapoyl aldehyde Sinapyl aldehyde
Identifiers
CAS Number	4206-58-0 (2E)-2-en
3D model (Jmol)	Interactive image Interactive image Interactive image
3DMet	B00807
Beilstein Reference	2215799
ChEBI	CHEBI:27949
ChemSpider	106501 Y 4509719 (2Z)-2-en Y
ECHA InfoCard	100.156.065
KEGG	C05610
MeSH	Sinapaldehyde
PubChem CID	119216 5352903 (2Z)-2-en 5280802 (2E)-2-en
InChI InChI=1S/C11H12O4/c1-14-9-6-8(4-3-5-12)7-10(15-2)11(9)13/h3-7,13H,1-2H3 Key: CDICDSOGTRCHMG-UHFFFAOYSA-N
SMILES COc1cc(C=CC=O)cc(OC)c1O COC1=CC(C=CC=O)=CC(OC)=C1O COC1=CC(=CC(=C1O)OC)C=CC=O
Properties
Chemical formula	C11H12O4
Molar mass	208.21 g·mol−1
Melting point	104 to 106 °C (219 to 223 °F; 377 to 379 K)
log P	1.686
Acidity (pKa)	9.667
Basicity (pKb)	4.330
Hazards
EU classification (DSD)	Xi
R-phrases	R36/37/38
S-phrases	S26, S36
Related compounds
Related alkenals	Cinnamaldehyde Coniferyl aldehyde DMACA reagent 2-Nitrocinnamaldehyde
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Sinapic aldehyde
Sinapinaldehyde
Sinapoyl aldehyde

Coniferyl aldehyde
DMACA reagent
2-Nitrocinnamaldehyde

Sinapaldehyde is an organic compound that is an intermediate in the formation of lignin.

In Arabidopsis thaliana, this compound is part of the lignin biosynthesis pathway. The enzyme dihydroflavonol 4-reductase uses sinapaldehyde and NADPH to produce sinapyl alcohol and NADP⁺.

It is found in Senra incana (Hibisceae). It is a low molecular weight phenol that is susceptible to be extracted from cork stoppers into wine.