Syringic acid

Structural formula
General
Surname	Syringic acid
other names	4-hydroxy-3,5-dimethoxybenzoic acid; Gallic acid 3,5-dimethyl ether; SYRINGIC ACID ( INCI ) ;
Molecular formula	C 9 H 10 O 5
Brief description	odorless, beige-colored powder
External identifiers / databases
EC number	208-486-8
ECHA InfoCard	100.007.716
PubChem	10742
ChemSpider	10289
Wikidata	Q408428
properties
Molar mass	198.18 g mol −1
Physical state	firmly
Melting point	204-207 ° C
solubility	poor in water (5.8 g l −1 at 25 ° C)
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 315-319-335
	P: 280-305 + 351 + 338-312
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Syringic acid is an organic chemical compound from the group of hydroxybenzoic acids , which occurs in various plants, but above all in blue berries such as blueberries or blue grapes . It is also formed as a decomposition product of the anthocyanin dye oenine . It is a dimethyl ether of gallic acid .

The name of the acid comes - analogously to syringol , syringa alcohol , syringaldehyde or acetosyringone - from the Latin name of lilac ( syringa ), as it can be derived from the glucoside syringin , which was first discovered in the bark of lilacs.

properties

By decarboxylation of syringic arises syringol .

use

In archeology , syringic acid is used to determine whether, for example, amphorae found were filled with white or red wine, as it is only contained in the latter.

Individual evidence

↑ entry to SYRINGIC ACID in CosIng database of the European Commission, accessed on May 13, 2020th
↑ ^a ^b ^c ^d ^e ^f data sheet syringic acid (PDF) from Carl Roth , accessed on March 14, 2017.
↑ MR Guasch-Jane, M. Ibern-Gomez, C. Andres-Lacueva, O. Jauregui, RM Lamuela-Raventos: "Liquid chromatography with mass spectrometry in tandem mode applied for the identification of wine markers in residues from ancient Egyptian vessels" , in: Analytical Chemistry , 2004 , 76 , pp. 1672-1677; doi: 10.1021 / ac035082z ; PMID 15018566 .

Web links

Entry to syringic acid. In: Römpp Online . Georg Thieme Verlag, accessed on August 17, 2015.

[CosIng-1] try to SYRINGIC ACID in CosIng database of the European Commission, accessed on May 13, 2020th

[Carl_Roth-2] ↑ ^a ^b ^c ^d ^e ^f data sheet syringic acid (PDF) from Carl Roth , accessed on March 14, 2017.

[Analytical_Chemistry-3] MR Guasch-Jane, M. Ibern-Gomez, C. Andres-Lacueva, O. Jauregui, RM Lamuela-Raventos: "Liquid chromatography with mass spectrometry in tandem mode applied for the identification of wine markers in residues from ancient Egyptian vessels" , in: Analytical Chemistry , 2004 , 76 , pp. 1672-1677; doi: 10.1021 / ac035082z ; PMID 15018566 .