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Hydroxyphenylacetic acid

HCID 127
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Basic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
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Basic information

CAS
156-38-7
Standard SMILES
O=C(O)Cc1ccc(O)cc1
InChIKey
XQXPVVBIMDBYFF-UHFFFAOYSA-N
Molecular formula
C8H8O3
Average molar mass
152.15 g/mol
Monoisotopic mass
152.04734411

Overview

4-hydroxyphenylacetic acid is a monocarboxylic acid that is acetic acid in which one of the methyl hydrogens is substituted by a 4-hydroxyphenyl group. It has a role as a mouse metabolite, a plant metabolite, a fungal metabolite and a human metabolite. It is a monocarboxylic acid and a member of phenols. It is functionally related to an acetic acid. It is a conjugate acid of a 4-hydroxyphenylacetate.

Names & identifiers

Preferred name
Hydroxyphenylacetic acid
IUPAC
2-(4-hydroxyphenyl)acetic acid
English name
4-Hydroxyphenylacetic acid
Molecular formula
C8H8O3
Molecular weight
152.15

Names & synonyms

4-hydroxyphenylacetic acid156-38-7p-hydroxyphenylacetic acid(4-Hydroxyphenyl)acetic acid4-Hydroxybenzeneacetic acidbenzeneacetic acid, 4-hydroxy-(p-Hydroxyphenyl)acetic acid4-CarboxymethylphenolParahydroxy phenylacetic acidAcetic acid, (p-hydroxyphenyl)-3J9SHG0RCNNSC-25066
Show more names
2-(4-hydroxyphenyl)acetic acidPHPA4-Hydroxyphenylacetic4-hydrophenylacetic acid4-hydroxybenzeneaceticacidNSC 27460
NSC-27460DTXSID5059745CHEBI:18101para-hydroxyphenylacetic acidRefChem:524062DTXCID6035023205-851-3Hydroxyphenylacetic acid

Database identifiers

CAS
156-38-7
PubChem CID
127
DTXSID
DTXSID5059745

Properties

Computed structural properties

XLogP
0.8
Topological polar surface area
57.5 Ų
Hydrogen bond donors
2
Hydrogen bond acceptors
3
Rotatable bonds
2
Heavy atoms
11
Formal charge
0
Complexity
136

Experimental & physicochemical properties

Chemical ClassesOther Classes -> Other Aromatic Compounds
SpringerMaterials PropertiesFusion temperature
LogP · 2 items

0.75

1.26

Solubility60.7 mg/mL
Melting Point148 - 150 °C
Vapor Pressure0.0000555 [mmHg]
Physical Description · 2 items

Off-white crystalline powder; [Alfa Aesar MSDS]

Solid

Collision Cross Section · 4 items

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

135.22 Ų [M-H]- [CCS Type: DT; Method: stepped-field]

128.6 Ų [M-H]- [CCS Type: DT; Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]

128.9 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 · 4 items

Warning

H315 (97%): Causes skin irritation [Warning Skin corrosion/irritation]

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

Aggregated GHS information provided per 233 reports by companies from 12 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Hazard information

Regulatory Information · 3 items

Chemical: Benzeneacetic acid, 4-hydroxy-

REACH registered substance: p-hydroxyphenylacetic acid (EC: 205-851-3)

(4-Hydroxyphenyl)-acetic acid: Does not have an individual approval but may be used under an appropriate group standard

Other Safety InformationEvaluation - Chemicals that are unlikely to require further regulation to manage risks to environment
Hazards SummaryIntraperitoneal LD50 (mouse) = 3,500 mg/kg; [RTECS] An irritant; [Alfa Aesar MSDS] See Phenylacetic acid.
Hazard Classes and CategoriesSkin Irrit. 2 (97%)

Safety data

PPE
dust mask type N95 (US), Eyeshields, Gloves
wgk
3
tsca
TSCA listed
rtecs
AI2680000
hs_code
29182990
risk_code
36/37/38

Chemistry & industry

Pharmacology

Metabolism/Metabolites4-hydroxyphenylacetic acid has known human metabolites that include 2-Phenylacetic acid.
MeSH Pharmacological ClassificationSubstances that increase the risk of NEOPLASMS in humans or animals. Both genotoxic chemicals, which affect DNA directly, and nongenotoxic chemicals, which induce neoplasms by other mechanism, are included.
Tissue LocationsBladder
Cellular LocationsCytoplasm
Metabolite PathwaysAlkaptonuria

Uses & manufacturing

General Manufacturing InformationBenzeneacetic acid, 4-hydroxy-: ACTIVE
Applications · 3 items

Description4-Hydroxyphenylacetic acid is an acetate derivative used in the acylation of phenols and amines1. It is an active component of Chinese herb Aster tataricus which had been widely used in China for the treatment of pulmonary diseases, HBV, and carcinoma. It is an active metabolite of amino acid metabolism. Study has also shown that it can attenuate inflammation and edema through suppressing hypertonic and hypoxic induction of HIF-1α in seawater aspiration-induced lung injury in rats. In chemical industry, it is an intermediate used to synthesize atenolol and 3, 4-dihydroxyphenylacetic acid.

UsesIt is used as a reagent in the acylation of phenols and amines. It is also used for fluorometric determination of oxidative enzymes.

UsesA compound present in olive oil. An important fine chemical intermediate with broad prospects for application development.

Related reactions

274 records
New reaction record
HRID 2224 reaction equation
HRID 2224As reactantuspto-grants-1998_03
HRID 2990 reaction equation
HRID 2990As reactantuspto-grants-1998_03
HRID 6442 reaction equation
HRID 6442As reactantuspto-grants-1993_09
HRID 48146 reaction equation
HRID 48146As reactantuspto-grants-2004_03
HRID 59013 reaction equation
HRID 59013As reactantuspto-grants-2016_09
HRID 114757 reaction equation
HRID 114757As reactantTraining data from https://doi.org/10.1039/C8SC04228D (2/10)
HRID 120599 reaction equation
HRID 120599As reactantTraining data from https://doi.org/10.1039/C8SC04228D (2/10)
HRID 136016 reaction equation
HRID 136016As reactantTraining data from https://doi.org/10.1039/C8SC04228D (9/10)
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Compound notes

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On this pageBasic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
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ChEMBL
CHEMBL1772
ChEBI
CHEBI:18101
UNII
3J9SHG0RCN
EC Number
205-851-3
Nikkaji
J5.873D
Melting point
148 · 148-151 °C(lit.)
Boiling point
234.6 °C · 234.6°C (rough estimate)
Density
1.2143 · 1.2143 (rough estimate)
vapor pressure
0.007 Pa · 0.007Pa at 25℃
refractive index
1.4945 · 1.4945 (estimate)
storage temp.
Inert atmosphere,Room Temperature
solubility
50 g/l · 50g/l
pka
4.5 · 4.50±0.10(Predicted)
form
Crystalline Powder
color
White to cream or light tan
PH
2 · 2.0-2.4 (30g/l, H2O, 20℃)
Water Solubility
Soluble in dimethyl sulfoxide and methanol. Slightly soluble in water.
BRN
1448766 · 1448766
InChI
1S/C8H8O3/c9-7-3-1-6(2-4-7)5-8(10)11/h1-4,9H,5H2,(H,10,11)
InChIKey
XQXPVVBIMDBYFF-UHFFFAOYSA-N
SMILES
OC(=O)Cc1ccc(O)cc1
LogP
0.75 at · 0.75 at 25℃
CAS DataBase Reference
156 · 156-38-7(CAS DataBase Reference)
EWG's Food Scores
1 · 1
FDA UNII
3 J9SHG0RCN · 3J9SHG0RCN
NIST Chemistry Reference
4 · Benzeneacetic acid, 4-hydroxy-(156-38-7)
EPA Substance Registry System
4 · Benzeneacetic acid, 4-hydroxy- (156-38-7)
UNSPSC Code
12352100 · 12352100
NACRES
22 · NA.22
Symbol(GHS)
7 · GHS07
Signal word
Warning
Hazard statements
315 · H315-H319-H335
Precautionary statements
261 · P261-P305+P351+P338
target organs
Respiratory system
PPE
95 · dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes
Xi
Risk Statements
36 · 36/37/38
Safety Statements
26 · 26-36-24/25
WGK Germany
3 · 3
RTECS
2680000 · AI2680000
Hazard Note
Irritant
TSCA
TSCA listed
HS Code
29182990 · 29182990
Storage Class
11 · 11 - Combustible Solids
Hazard Classifications
2 Skin · Eye Irrit. 2Skin Irrit. 2STOT SE 3
REACH Registrations
Active
Signal word
Warning
Symbol(GHS)
GHS07
hazard_code
Xi
hazard_note
Irritant
safety_code
26-36-24/25
Storage Class
11 - Combustible Solids
target organs
Respiratory system
Hazard statements
H315-H319-H335
REACH Registrations
Active
Hazard Classifications
Eye Irrit. 2Skin Irrit. 2STOT SE 3
Precautionary statements
P261-P305+P351+P338
Preparation methods · 1 item

Preparation4-Hydroxyphenylacetic acid is synthesized by diazotization and hydrolysis of 4-aminophenylacetic acid. 4-aminophenylacetic acid and alkali solution are prepared into sodium salt, and then sulfuric acid is added. Cool to 0°C, control the temperature at 0-5°C, and add sodium nitrate solution dropwise, and the reaction is completed for 0.5h. The obtained diazonium was added dropwise to dilute sulfuric acid at 90-95°C for about 1 hour, and the reaction was continued for 1 hour. The reaction solution was decolorized and filtered, cooled and extracted with ethyl acetate, and the extract was recovered with ethyl acetate to obtain 4-Hydroxyphenylacetic acid. The yield is about 85%.

Upstream & downstream products

Upstream raw materials

GlyoxalPhenol4-Aminophenylacetic acidGlyoxylic acidBenzyl 2-(4-(benzyloxy)phenyl)acetate4-Iodophenylacetic acid4-Hydroxyphenethyl alcoholMethyl 4-chlorophenylacetate4-Hydroxybenzyl cyanide4-Methoxyphenylacetic acid2-hydroxy-1-(4-hydroxyphenyl)ethanone3,4-Dihydroxyphenylacetic acid4-Vinylphenol

Downstream products

2-[3-(2H-Benzotriazol-2-yl)-4-hydroxyphenyl]ethyl methacrylateMethyl 4-hydroxyphenylacetateEthyl 4-hydroxyphenylacetateCefprozil hydrateIsobutylparabenCamostat4-HydroxyphenylacetamideBufexamacP-TOLYL-ACETYL CHLORIDE4-Methoxyphenylacetyl chloride
Additional notes · 1 item

DefinitionChEBI: 4-hydroxyphenylacetic acid is a monocarboxylic acid that is acetic acid in which one of the methyl hydrogens is substituted by a 4-hydroxyphenyl group. It has a role as a plant metabolite, a fungal metabolite, a human metabolite and a mouse metabolite. It is a monocarboxylic acid and a member of phenols. It derives from an acetic acid. It is a conjugate acid of a 4-hydroxyphenylacetate.