Syringic acid
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| Names | |
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| Preferred IUPAC name
4-Hydroxy-3,5-dimethoxybenzoic acid | |
| Other names
Gallic acid 3,5-dimethyl ether
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| Identifiers | |
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3D model (JSmol)
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PubChem CID
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| Properties | |
| C9H10O5 | |
| Molar mass | 198.174 g·mol−1 |
| Melting point | 206 to 209 |
| Hazards | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Template:Chembox Footer/trackingTemplate:Short description
Syringic acid is a naturally occurring phenolic compound and dimethoxybenzene that is commonly found as a plant metabolite.
Natural occurrence
Syringic acid can be found in several plants including Ardisia elliptica and Schumannianthus dichotomus.[1] It is biosynthesized by the shikimic acid pathway in plants.[2]
Synthesis
Syringic acid can be prepared by selectively hydrolyzing (demethylating) eudesmic acid with 20% sulfuric acid.[3]
Presence in food
Syringic acid can be found in several fruits including olives, dates, spices, pumpkin, grapes,[4] acai palm,[5] honey, red wine, among others.[2] Its presence in the ancient Egyptian drink shedeh could confirm it was made out of grape, as syringic acid is released by the breakdown of the compound malvidin, also found in red wine. It is also found in vinegar.[6]
Applications
Various studies have found syringic acid to have potentially useful properties such as anti-oxidant, anti-microbial, anti-inflammation, anti-cancer, and anti-diabetic.[2]
Syringic acid has a hepatotoxic effect upon ingestion, and is a skin/eye irritant.[7]
Syringic acid can be enzymatically polymerized. Laccase and peroxidase induced the polymerization of syringic acid to give a poly(1,4-phenylene oxide) bearing a carboxylic acid at one end and a phenolic hydroxyl group at the other.[8]
See also
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References
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- ^ Page Module:Citation/CS1/styles.css has no content.Rob, Md. Mahfuzur; Hossen, Kawsar; Iwasaki, Arihiro; Suenaga, Kiyotake; Kato-Noguchi, Hisashi (2020-01-14). "Phytotoxic Activity and Identification of Phytotoxic Substances from Schumannianthus dichotomus". Plants. 9 (1): 102. Bibcode:2020Plnts...9..102R. doi:10.3390/plants9010102. ISSN 2223-7747. PMC 7020185. PMID 31947649.
- ^ a b c Page Module:Citation/CS1/styles.css has no content.Srinivasulu, Cheemanapalli; Ramgopal, Mopuri; Ramanjaneyulu, Golla; Anuradha, C.M.; Suresh Kumar, Chitta (December 2018). "Syringic acid (SA) ‒ A Review of Its Occurrence, Biosynthesis, Pharmacological and Industrial Importance". Biomedicine & Pharmacotherapy. 108: 547–557. doi:10.1016/j.biopha.2018.09.069. ISSN 0753-3322. PMID 30243088.
- ^ Page Module:Citation/CS1/styles.css has no content.Bogert, Marston; Ehrlich, Jacob (Mar 1919). "The synthesis of certain pyrogallol ethers, including a new acetophenetide derived from the ethyl ether of syringic acid". Journal of the American Chemical Society. 41 (5): 798–810. doi:10.1021/ja02226a013. Retrieved 2 November 2013.
- ^ Page Module:Citation/CS1/styles.css has no content.Pezzuto, John M. (August 2008). "Grapes and Human Health: A Perspective". Journal of Agricultural and Food Chemistry. 56 (16): 6777–6784. Bibcode:2008JAFC...56.6777P. doi:10.1021/jf800898p. ISSN 0021-8561. PMID 18662007.
- ^ Page Module:Citation/CS1/styles.css has no content.Pacheco-Palencia LA, Mertens-Talcott S, Talcott ST (Jun 2008). "Chemical composition, antioxidant properties, and thermal stability of a phytochemical enriched oil from Acai (Euterpe oleracea Mart.)". J Agric Food Chem. 56 (12): 4631–4636. Bibcode:2008JAFC...56.4631P. doi:10.1021/jf800161u. PMID 18522407.
- ^ Page Module:Citation/CS1/styles.css has no content.Gálvez, Miguel Carrero; Barroso, Carmelo García; Pérez-Bustamante, Juan Antonio (1994). "Analysis of polyphenolic compounds of different vinegar samples". Zeitschrift für Lebensmittel-Untersuchung und -Forschung. 199: 29–31. doi:10.1007/BF01192948. S2CID 91784893.
- ^ Page Module:Citation/CS1/styles.css has no content."3,5-Dimethoxy-4-hydroxybenzoic acid - Hazardous Agents". 2026.
- ^ Page Module:Citation/CS1/styles.css has no content.Uyama, Hiroshi; Ikeda, Ryohei; Yaguchi, Shigeru; Kobayashi, Shiro (2001). "Enzymatic Polymerization of Natural Phenol Derivatives and Enzymatic Synthesis of Polyesters from Vinyl Esters". Polymers from Renewable Resources. ACS Symposium Series. Vol. 764. p. 113. doi:10.1021/bk-2000-0764.ch009. ISBN 0-8412-3646-1.
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