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2,5-Dihydroxybenzoic acid

HCID 3469
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Basic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
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Basic information

CAS
490-79-9
Standard SMILES
O=C(O)c1cc(O)ccc1O
InChIKey
WXTMDXOMEHJXQO-UHFFFAOYSA-N
Molecular formula
C7H6O4
Average molar mass
154.12 g/mol
Monoisotopic mass
154.02660867

Overview

2,5-dihydroxybenzoic acid is a dihydroxybenzoic acid having the two hydroxy groups at the 2- and 5-positions. It has a role as a MALDI matrix material, an EC 1.13.11.33 (arachidonate 15-lipoxygenase) inhibitor, a mouse metabolite, a fungal metabolite and a human metabolite. It is functionally related to a benzoic acid. It is a conjugate acid of a 2,5-dihydroxybenzoate.

Names & identifiers

Preferred name
2,5-Dihydroxybenzoic acid
IUPAC
2,5-dihydroxybenzoic acid
English name
2,5-Dihydroxybenzoic acid
Molecular formula
C7H6O4
Molecular weight
154.12

Names & synonyms

2,5-DIHYDROXYBENZOIC ACIDgentisic acid490-79-9Benzoic acid, 2,5-dihydroxy-5-Hydroxysalicylic acidHydroquinonecarboxylic acidGensigenGensigon2,5-Dhba2,5-Dioxybenzoic acidSalicylic acid, 5-hydroxy-Kyselina gentisinova
Show more names
DHBGentisateGentisicPhloretate2,5-dihydroxybenzoic2,5-Dihydroxybenzoes?ureKyselina 2,5-dihydroxybenzoova
Acido gentisicoAcide gentisiqueAcidum gentisicumVP36V95O3TNSC-27224DTXSID4060078CHEBI:17189RefChem:639843

Database identifiers

CAS
490-79-9
PubChem CID
3469
DTXSID
DTXSID4060078
ChEMBL
CHEMBL1461
ChEBI
CHEBI:17189
UNII
VP36V95O3T
EC Number
207-718-5

Properties

Computed structural properties

XLogP
1.6
Topological polar surface area
77.8 Ų
Hydrogen bond donors
3
Hydrogen bond acceptors
4
Rotatable bonds
1
Heavy atoms
11
Formal charge
0
Complexity
157

Experimental & physicochemical properties

Chemical ClassesOther Classes -> Other Aromatic Compounds
DrugsPharmaceuticals -> Metabolite of Acetylsalicylic acid
LogP · 2 items

1.74

1.12

Solubility5.0 mg/mL at 5 °C
Melting Point199.5 °C
Vapor Pressure0.0000021 [mmHg]
Physical Description · 2 items

Solid; [Merck Index] Light yellow crystals; [Aldrich MSDS]

Solid

Collision Cross Section · 2 items

122.67 Ų [M-H]- [CCS Type: DT; Method: single field calibrated with Agilent tune mix (Agilent)]

125 Ų [M-H]-

Physicochemical properties

Safety & regulation

Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.

GHS classification

GHS Classification · 5 items

This chemical does not meet GHS hazard criteria for 1.5% (1 of 67) of reports.

Warning

H302 (94%): Harmful if swallowed [Warning Acute toxicity, oral]

P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 67 reports by companies from 11 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Hazard information

Regulatory Information · 2 items

Chemical: Benzoic acid, 2,5-dihydroxy-

Benzoic acid, 2,5-dihydroxy-: Does not have an individual approval but may be used under an appropriate group standard

Hazards SummaryCauses convulsions in intravenous lethal-dose studies of mice; [RTECS] A skin and strong eye irritant; Harmful by ingestion and skin absorption; Evidence of reproductive toxicity in experimental animals; [Aldrich MSDS]
Hazard Classes and CategoriesAcute Tox. 4 (94%)

Toxicology

Adverse EffectsNeurotoxin - Other CNS neurotoxin

Safety data

PPE
dust mask type N95 (US), Eyeshields, Gloves
wgk
3
tsca
TSCA listed

Chemistry & industry

Pharmacology

Metabolism/Metabolites5-hydroxylation is a known human metabolite of salicylic acid.
Cellular LocationsCytoplasm

Uses & manufacturing

Uses · 2 items

Excreted in urine of dogs following ingestion of salicylates; Used therapeutically (analgesic and anti-inflammatory); [Merck Index] An oxidative product of saligenin; [ChemIDplus] Used as an analgesic medicine; [Hawley]

Synthetic Polymer MALDI Matrix Compounds

Household ProductsInformation on 1 consumer products that contain Gentisic acid in the following categories is provided:
General Manufacturing InformationBenzoic acid, 2,5-dihydroxy-: ACTIVE
Applications · 5 items

DescriptionGentisic acid is a dihydroxy benzoic acid. It is a derivative of benzoic acid and a minor (1 %) product of the metabolic break down of aspirin, excreted by the kidneys. It is also found in the African tree Alchornea cordifolia and in wine.

DescriptionGentisic acid is a benzoic acid that has been found in Gentiana and an active metabolite of aspirin with diverse biological activities. It decreases radiation-induced production of thiobarbituric acid reactive substances (TBARS), hydrogen peroxide, and protein carbonyls, increases superoxide dismutase activity, and prevents hemolysis in isolated human erythrocytes when used at concentrations ranging from 5 to 100 μM. Gentisic acid (1-10 μM) inhibits LDL oxidation and formation of cholesterol ester hydroperoxides in isolated human plasma. It induces relaxation of isolated guinea pig trachea (EC50 = 20 μM), an effect that is reduced by the large-conductance calcium-activated potassium channel blocker charybdotoxin . Gentisic acid (10 and 100 mg/kg) reduces cardiac hypertrophy and fibrosis and pulmonary remodeling, suppresses the renin-angiotensin-aldosterone system, and inhibits cardiac dysfunction in a mouse model of transverse aortic constriction-induced cardiac hypertrophy. It also prevents cardiovascular collapse and lactic acidemia in a canine model of P. aeruginosa-induced septic shock.

Related reactions

73 records
New reaction record
HRID 71220 reaction equation
HRID 71220As reactantuspto-grants-2014_09
HRID 78306 reaction equation
HRID 78306As reactantuspto-grants-2014_09
HRID 96362 reaction equation
HRID 96362As reactantTraining data from https://doi.org/10.1039/C8SC04228D (2/10)
HRID 110379 reaction equation
HRID 110379As productTraining data from https://doi.org/10.1039/C8SC04228D (2/10)
HRID 234838 reaction equation
HRID 234838As reactantuspto-grants-1997_01
HRID 259775 reaction equation
HRID 259775As reactantuspto-grants-1996_06
HRID 312648 reaction equation
HRID 312648As reactantTraining data from https://doi.org/10.1039/C8SC04228D (8/10)
HRID 335356 reaction equation
HRID 335356As reactantuspto-grants-2014_11
Page 1 of 10

Compound notes

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On this pageBasic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
More actions
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Nikkaji
J6.046A
Melting point
204 · 204-208 °C(lit.)
Boiling point
237.46 °C · 237.46°C (rough estimate)
Density
1.3725 · 1.3725 (rough estimate)
refractive index
1.64 · 1.6400 (estimate)
storage temp.
30 °C · Store below +30°C.
solubility
It is soluble in alcohol and ether.
pka
2.97 · 2.97(at 25℃)
form
Crystalline Powder
color
White to light beige
PH
3.21 · 3.21(1 mM solution);2.56(10 mM solution);2.01(100 mM solution)
Water Solubility
soluble
ε(extinction coefficient)
2000 at · >2000 at 337nm
Merck
14 · 14,4398
BRN
2209119 · 2209119
Cosmetics Ingredients Functions
SKIN CONDITIONING
InChI
1S/C7H6O4/c8-4-1-2-6(9)5(3-4)7(10)11/h1-3,8-9H,(H,10,11)
InChIKey
WXTMDXOMEHJXQO-UHFFFAOYSA-N
SMILES
OC(=O)c1cc(O)ccc1O
LogP
1.74 · 1.740
CAS DataBase Reference
490 · 490-79-9(CAS DataBase Reference)
EWG's Food Scores
1 · 1
FDA UNII
36 V95O3T · VP36V95O3T
NIST Chemistry Reference
2 · 2,5-Dihydroxybenzoic acid(490-79-9)
EPA Substance Registry System
2 · Benzoic acid, 2,5-dihydroxy- (490-79-9)
UNSPSC Code
77101502 · 77101502
NACRES
24 · NA.24
Symbol(GHS)
7 · GHS07
Signal word
Warning
Hazard statements
302 · H302
Precautionary statements
264 · P264-P270-P301+P312-P501
PPE
95 · dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes
Xn,Xi
Risk Statements
22 · 22-36/37/38
Safety Statements
26 · 26-36-37/39
WGK Germany
3 · 3
RTECS
3850000 · LY3850000
Hazard Note
Harmful
TSCA
TSCA listed
HS Code
29182990 · 29182990
Storage Class
11 · 11 - Combustible Solids
Hazard Classifications
4 Oral · Acute Tox. 4 Oral
rtecs
LY3850000
hs_code
29182990
risk_code
22-36/37/38
Signal word
Warning
Symbol(GHS)
GHS07
hazard_code
Xn,Xi
hazard_note
Harmful
safety_code
26-36-37/39
Storage Class
11 - Combustible Solids
Hazard statements
H302
Hazard Classifications
Acute Tox. 4 Oral
Precautionary statements
P264-P270-P301+P312-P501

UsesMedicine, as sodium gentisate (analgesic).

Uses2,5-dihydroxybenzoic acid areused as intermediates for pharmaceuticals (especially for antipyetic anlgesic, antirheumatism) and other organic synthesis. They are used as matrix for ionization of peptides, proteins and carbohydrates. In industrial field, they areused as intermediates for the production of other organic chemicals, resins, polyesters, plasticizers, dyestuffs, preservatives, and rubber chemicals.

General DescriptionAspirin metabolite.

Upstream & downstream products

Upstream raw materials

Hydroquinone

Downstream products

FlecainideMethyl 2,5-dihydroxybenzoate3,6-DihydroxyxanthoneGENTISINSodium gentisate2,5-Diamino-2,5-cyclohexadiene-1,4-dione
Additional notes · 1 item

DefinitionChEBI: 2,5-dihydroxybenzoic acid is a dihydroxybenzoic acid having the two hydroxy groups at the 2- and 5-positions. It has a role as a MALDI matrix material, an EC 1.13.11.33 (arachidonate 15-lipoxygenase) inhibitor, a human metabolite, a fungal metabolite and a mouse metabolite. It is functionally related to a benzoic acid. It is a conjugate acid of a 2,5-dihydroxybenzoate.