4-hydroxybenzaldehyde

4-Hydroxybenzaldehyde

Names
IUPAC name 4-Hydroxybenzaldehyde
Other names p-Hydroxybenzaldehyde
Identifiers
CAS Number	123-08-0 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:17597 Y
ChemSpider	123 Y
DrugBank	DB03560 Y
ECHA InfoCard	100.004.182
KEGG	C00633 Y
PubChem CID	126
UNII	O1738X3Y38 Y
InChI InChI=1S/C7H6O2/c8-5-6-1-3-7(9)4-2-6/h1-5,9H Y Key: RGHHSNMVTDWUBI-UHFFFAOYSA-N Y InChI=1/C7H6O2/c8-5-6-1-3-7(9)4-2-6/h1-5,9H Key: RGHHSNMVTDWUBI-UHFFFAOYAN
SMILES O=Cc1ccc(O)cc1
Properties
Chemical formula	C7H6O2
Molar mass	122.12 g·mol−1
Appearance	yellow to tan powder
Density	1.226 ± 0.06 g/cm3
Melting point	112 to 116 °C (234 to 241 °F; 385 to 389 K)
Boiling point	310 to 311 °C (590 to 592 °F; 583 to 584 K)
Magnetic susceptibility (χ)	-78.0·10−6 cm3/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y  (what is YN ?)
Infobox references

4-Hydroxybenzaldehyde is one of the three isomers of hydroxybenzaldehyde. It can be found in the orchids Gastrodia elata and Galeola faberi. It is also found in vanilla.

The Dakin oxidation is an organic redox reaction in which an ortho- or para-hydroxylated phenyl aldehyde (2-hydroxybenzaldehyde or 4-hydroxybenzaldehyde) or ketone reacts with hydrogen peroxide in base to form a benzenediol and a carboxylate. Overall, the carbonyl group is oxidized, and the hydrogen peroxide is reduced.

p-Hydroxybenzaldehyde dehydrogenase is an enzyme found in carrots (Daucus carota).