Acetovanillone Property

Melting point:

112-115 °C (lit.)

Boiling point:

263-265 °C/17 mmHg (lit.)

Density 

1.1708 (rough estimate)

refractive index 

1.5101 (estimate)

Flash point:

>230 °F

storage temp. 

Sealed in dry,Room Temperature

solubility 

Acetonitrile (Slightly), Chloroform (Slightly), Ethyl Acetate (Slightly), Methan

pka

8.18±0.18(Predicted)

form 

Solid

color 

Yellow to brown

Odor

at 100.00 %. faint sweet vanillin

Odor Type

vanilla

Water Solubility 

soluble in hot water

Merck 

14,741

BRN 

637373

LogP

1.389 (est)

CAS DataBase Reference

498-02-2(CAS DataBase Reference)

NIST Chemistry Reference

Ethanone, 1-(4-hydroxy-3-methoxyphenyl)-(498-02-2)

EPA Substance Registry System

Acetovanillone (498-02-2)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

WGK Germany 

2

RTECS 

AM8800000

TSCA 

Yes

HS Code 

29145000

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Acetovanillone Chemical Properties,Usage,Production

Chemical Properties

Acetovanillone is a yellowish to brown powder, soluble in alcohol, essential oils, and perfume chemicals. It is slightly soluble in water at room temperature but readily dissolves in hot water. It has a very faint, sweet odor, faintly reminiscent of vanillin, but with less spiciness and somewhat fresher notes. It occurs widely in nature, including in Orris root distillate.

Uses

4'-Hydroxy-3'-methoxyacetophenone is used as an inhibitor of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase, which is an enzyme responsible for reactive oxygen species production. It is also useful in the treatment of various inflammatory diseases and atherosclerosis. Further, it shows an anti-inflammatory activity and improves endothelial function by reducing oxidative stress. In addition to this, it is used for studying nitric oxide regulated processes in plants.

Uses

Acetovanillone is an inhibitor of NADPH oxidase (an enzyme responsible for reactive oxygen species production) and is useful in the treatment of various inflammatory diseases.

Definition

ChEBI: Apocynin is an aromatic ketone that is 1-phenylethanone substituted by a hydroxy group at position 4 and a methoxy group at position 3. It has a role as a non-narcotic analgesic, a non-steroidal anti-inflammatory drug, an antirheumatic drug, a peripheral nervous system drug, an EC 1.6.3.1. [NAD(P)H oxidase (H2O2-forming)] inhibitor and a plant metabolite. It is a member of acetophenones, a methyl ketone and an aromatic ketone.

Preparation

Synthetically by methylation of 3,4-Dihydroxyacetophenone. It can also be obtained by Fries rearrangement of guaiacol acetate in the presence of zinc chloride. It can be isolated from the extract of the roots of Indian hemp, Apocynum cannabinum L.

Production Methods

Synthetically by methylation of 3,4- Dihydroxy acetophenone. Also from Guaiacol acetate with Zinc chloride and Acetic anhydride. Can be isolated from the extract of the roots of Indian hemp, Apocynum cannabinum L.

Synthesis Reference(s)

The Journal of Organic Chemistry, 60, p. 739, 1995 DOI: 10.1021/jo00108a046

General Description

Acetovanillone is an aromatic plant ketone, which is a selective inhibitor of NADPH oxidase. It is mainly secreted in the urine of mammals as the corresponding glucuronide conjugate.

storage

Store at RT

Purification Methods

Crystallise apocynin from water, or EtOH/pet ether. [Beilstein 8 IV 1814.]

References

[1] GARA N DEXTER. Bacterial catabolism of acetovanillone, a lignin-derived compound.[J]. Proceedings of the National Academy of Sciences of the United States of America, 2022: e2213450119. DOI:10.1073/pnas.2213450119.
[2] YUDAI HIGUCHI. The Catabolic System of Acetovanillone and Acetosyringone in Sphingobium sp. Strain SYK-6 Useful for Upgrading Aromatic Compounds Obtained through Chemical Lignin Depolymerization.[J]. Applied and Environmental Microbiology, 2022, 88 16: e0072422. DOI:10.1128/aem.00724-22.
[3] CHIARA RIGANTI. The NADPH oxidase inhibitor apocynin (acetovanillone) induces oxidative stress[J]. Toxicology and applied pharmacology, 2006, 212 3: Pages 179-187. DOI:10.1016/j.taap.2005.07.011.
[4] GJERTSEN FB Scheline R Solheim E. Metabolism of aromatic plant ketones in rats: Acetovanillone and paeonol[J]. Journal of ethnopharmacology, 1988, 23 2: Page 342. DOI:10.1016/0378-8741(88)90035-9.