Ethyl maltol

Ethyl maltol

Names
Preferred IUPAC name 2-Ethyl-3-hydroxy-4H-pyran-4-one
Other names 2-Ethyl-3-hydroxy-4-pyranone 2-Ethyl pyromeconic acid 2-Ethyl-3-hydroxy-4-pyrone
Identifiers
CAS Number	4940-11-8 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:169105
ChEMBL	ChEMBL121557 Y
ChemSpider	19804 Y
ECHA InfoCard	100.023.256
EC Number	225-582-5
KEGG	C20362
PubChem CID	21059
RTECS number	UQ0840000
UNII	L6Q8K29L05 Y
CompTox Dashboard (EPA)	DTXSID5041516
InChI InChI=1S/C7H8O3/c1-2-6-7(9)5(8)3-4-10-6/h3-4,9H,2H2,1H3 Y Key: YIKYNHJUKRTCJL-UHFFFAOYSA-N Y InChI=1/C7H8O3/c1-2-6-7(9)5(8)3-4-10-6/h3-4,9H,2H2,1H3 Key: YIKYNHJUKRTCJL-UHFFFAOYAY
SMILES CCC1=C(C(=O)C=CO1)O
Properties
Chemical formula	C7H8O3
Molar mass	140.138 g·mol−1
Appearance	White crystalline powder
Melting point	85 to 95 °C (185 to 203 °F; 358 to 368 K)[1]
Boiling point	161 °C (322 °F; 434 K)
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302
Precautionary statements	P264, P270, P301+P312, P330, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Ethyl maltol is an organic compound that is a common flavourant in some confectioneries. It is related to the more common flavorant maltol by replacement of the methyl group by an ethyl group.^[2] It is a white solid with a sweet smell that can be described as caramelized sugar or as caramelized fruit. Ethyl maltol is often used in perfumery to create gourmand scents. Ethyl maltol was first used in Mugler's Angel perfume in 1992.^[3]

The conjugate base derived from ethylmaltol, again like maltol, has a high affinity for iron, forming a red coordination complex. In such compounds, the heterocycle is a bidentate ligand.

Original patent:^[4]