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4-Hydroxy-3-methoxybenzoic acid

Compound with spectra: 27 NMR, 8 FTIR, 1 Raman, 1 UV-Vis, and 16 MS (GC)

4-Hydroxy-3-methoxybenzoic acid
SpectraBase Compound ID Fc40WLZB2Dn
InChI InChI=1S/C8H8O4/c1-12-7-4-5(8(10)11)2-3-6(7)9/h2-4,9H,1H3,(H,10,11)
InChIKey WKOLLVMJNQIZCI-UHFFFAOYSA-N
Mol Weight 168.15 g/mol
Molecular Formula C8H8O4
Exact Mass 168.042259 g/mol

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

ATR-IR Spectrum
Copyright Copyright © 2016-2025 John Wiley & Sons, Inc. All Rights Reserved.

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ATR-IR Spectrum
Copyright Copyright © 2016-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Sample Alfa Aesar, Thermo Fisher Scientific
Source of Spectrum Bio-Rad Laboratories, Inc.
Catalog Number A12074

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ATR-IR Spectrum
Copyright Copyright © 2018-2025 Sigma-Aldrich Co. LLC. - Database Compilation Copyright © 2018-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Sample Aldrich
Catalog Number H36001

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FTIR Spectrum
Copyright Copyright © 2016-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Sample Alfa Aesar, Thermo Fisher Scientific
Source of Spectrum Bio-Rad Laboratories, Inc.
Catalog Number A12074
Technique KBr1

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FTIR Spectrum
Copyright Copyright © 1980, 1981-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Sample Fluka Chemie AG, Buchs, Switzerland
Technique KBr WAFER

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FTIR Spectrum
Copyright Copyright © 2021-2025 Sigma-Aldrich Co. LLC. - Database Compilation Copyright © 2021-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Sample Sigma-Aldrich Co. LLC.
Source of Spectrum Sigma-Aldrich Co. LLC.
Catalog Number W398802
Technique Mull

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FTIR Spectrum
Copyright Copyright © 2021-2025 Sigma-Aldrich Co. LLC. - Database Compilation Copyright © 2021-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Sample Sigma-Aldrich Co. LLC.
Source of Spectrum Sigma-Aldrich Co. LLC.
Catalog Number W398802
Technique Between salts

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13C NMR Spectrum
Copyright Database Compilation Copyright © 2021-2025 John Wiley & Sons, Inc. All Rights Reserved.

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13C NMR Spectrum
Copyright Copyright © 1980, 1981-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Sample Research Organic/Inorganic Chemical Corporation, Belleville, New Jersey
Solvent Dimethyl sulfoxide-d6; Reference=Dioxane Spectrometer= Varian HA-100/Digilab FT-NMR-3

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13C NMR Spectrum
Copyright Copyright © 2002-2025 Wiley-VCH GmbH. All Rights Reserved.
Solvent CDCL3

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13C NMR Spectrum
Copyright Copyright © 2002-2025 Wiley-VCH GmbH. All Rights Reserved.
Solvent D2O

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13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.
Solvent CD3OD

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13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.
Solvent ACETONE-D6

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13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.
Solvent ACETONE-D6

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13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.
Solvent Unknown

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13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.
Solvent DMSO-D6

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13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.
Solvent CD3OD

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13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.
Solvent DMSO-D6

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13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.
Solvent DMSO-D6

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13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.
Solvent CDCl3

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13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.
Solvent ACETONE-D6

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13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.
Solvent CD3OD

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13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.
Solvent ACETONE-D6

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13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.
Solvent CD3OD:CDCl3

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13C NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.
Solvent ACETONE-D6

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13C NMR Spectrum
Copyright Copyright © 2021-2025 Sigma-Aldrich Co. LLC. - Database Compilation Copyright © 2021-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Sample Sigma-Aldrich Co. LLC.
Source of Spectrum Sigma-Aldrich Co. LLC.
Catalog Number H36001
Solvent CDCl3 & DMSO-d6

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

1H NMR Spectrum
Copyright Database Compilation Copyright © 2021-2025 John Wiley & Sons, Inc. All Rights Reserved.

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1H NMR Spectrum
Copyright Copyright © 2009-2025 John Wiley & Sons, Inc. All Rights Reserved.
Solvent DMSO-d6

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1H NMR Spectrum
Copyright Copyright © 2021-2025 Sigma-Aldrich Co. LLC. - Database Compilation Copyright © 2021-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Sample Sigma-Aldrich Co. LLC.
Source of Spectrum Sigma-Aldrich Co. LLC.
Catalog Number H36001
Solvent CDCl3 & DMSO-d6

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Raman Spectrum
Copyright Copyright © 2015-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Spectrum Forensic Spectral Research

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UV-Vis Spectrum
Copyright Copyright © 2008-2025 John Wiley & Sons, Inc. All Rights Reserved.
Solvent Methanol

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Vapor Phase IR Spectrum
Copyright Copyright © 1980, 1981-2025 John Wiley & Sons, Inc. All Rights Reserved.

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MS (GC) Spectrum
Copyright Copyright © 2024-2025 DigiLab GmbH and Wiley-VCH GmbH. All Rights Reserved.
Source of Spectrum DigiLab GmbH (C) 2024
Technique GC/MS

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

MS (GC) Spectrum
Copyright Database Compilation Copyright © 2023-2025 John Wiley and Sons, Inc. Copyright © 2023-2025 John Wiley and Sons, Inc., Portions Copyright Wiley-VCH GmbH, Adams Library under license from Diablo Analytical. All Rights Reserved.
Source of Spectrum Prof. L. Mondello (Chromaleont s.r.l./Univ. Messina, Italy)

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

MS (GC) Spectrum
Copyright Database Compilation Copyright © 2023-2025 John Wiley and Sons, Inc. Copyright © 2023-2025 John Wiley and Sons, Inc., Portions Copyright Wiley-VCH GmbH, Adams Library under license from Diablo Analytical. All Rights Reserved.
Source of Spectrum SFA-85-348-Table 1-10 (DOI: 10.1002/jsfa.1991)

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MS (GC) Spectrum
Copyright Copyright © 2020-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Spectrum SRH-2022-8196-0

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

MS (GC) Spectrum
Copyright Copyright © 2020-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Spectrum AD-0-4969-0

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

MS (GC) Spectrum
Copyright Copyright © 2020-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Spectrum AD-0-3953-0

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

MS (GC) Spectrum
Copyright Copyright © 2020-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Spectrum WS-1986-268-0

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MS (GC) Spectrum
Copyright Copyright © 2020-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Spectrum QA-44-382-20

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

MS (GC) Spectrum
Copyright Copyright © 2020-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Spectrum SFA-85-348-Table 1-10

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

MS (GC) Spectrum
Copyright Copyright © 2020-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Spectrum CBD-19-13-6

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MS (GC) Spectrum
Copyright Copyright © 2020-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Spectrum PG-1982-914-0

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MS (GC) Spectrum
Copyright Copyright © 2020-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Spectrum Va-0-0-0

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

MS (GC) Spectrum
Copyright Copyright © 2020-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Spectrum QA-48-378-17

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

MS (GC) Spectrum
Copyright Copyright © 2020-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Spectrum JZ-1992-1437-0

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

MS (GC) Spectrum
Copyright Copyright © 2020-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Spectrum E1-42-1671-9

View Spectrum of 4-Hydroxy-3-methoxybenzoic acid

MS (GC) Spectrum
Copyright Copyright © 2020-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Spectrum QA-48-1057-22
  • Vanillic acid
  • WKOLLVMJNQIZCI-UHFFFAOYSA-N
  • VANILLIC-ACID;COMPOUN-#VI
  • VANILLIC-ACID;3-METHOXY-4-HYDROXY-BENZOIC-ACID
  • 3-Hydroxy-4-methoxybenzoic acid
  • 3-Methoxy-4-Hydroxybenzoic acid
  • BENZOIC ACID, 3-METHOXY-4-HYDROXY-,
  • Benzoic acid, 4-hydroxy-3-methoxy-
  • Vanillate
  • p-Vanillic acid
  • Acide vanillique
  • m-Anisic acid, 4-hydroxy-
  • 4-Hydroxy-3-methoxybenzoate
  • 3-Methoxy-4-oxidanyl-benzoic acid
  • Protocatechuic acid, 3-methyl ester
  • EINECS 204-466-8
  • NSC 3987
  • NSC 674322
  • BRN 2208364
  • AI3-19542
4-Methyl-m-anisic acid
Methyl 3,4-dihydroxybenzoate
Gallic-acid-4-methylether
4-hydroxyisophthalaldehydic acid
Methyl diantilis
N-Formyl-4-hydroxy-3-methoxy-benzylamine
3-(4-hydroxy-3-methoxy-phenyl)propanal
Guaiacol, 4-butyl-
4-HYDROXY-3-METHOXY-BENZALDEHYDE-O-ETHYLOXIME
Phenol, 4,4'-[dithiobis(methylene)]bis[2-methoxy-
Title Journal or Book Year
Chemical Constituents of Dendrobium williamsonii Pharmacognosy Journal 2014
Isolation and Characterization of an α-Glucosidase Inhibitor from Musa spp. (Baxijiao) Flowers Molecules 2014
Two Polycyclic Geranylhydroquinone-Derived Metabolites from Roots of Arnebia hispidissima (Lehm.) DC. Molecules 2014
Structural characterisation and antioxidant activity evaluation of phenolic compounds from cold-pressed Perilla frutescens var. arguta seed flour Food Chemistry 2014
Isolation and identification of phytochemical constituents from the fruits of Acanthopanax senticosus African Journal of Pharmacy and Pharmacology 2013
Antioxidant Activity of Papaya Seed Extracts Molecules 2011
Bioactive Metabolites from Spilanthes acmella Murr. Molecules 2009
New Prenylated Flavones from the Roots ofFicus Beecheyana Journal of the Chinese Chemical Society 2004
Constituents of Amomum tsao-ko and their radical scavenging and antioxidant activities Journal of the American Oil Chemists' Society 2000
A ferulic acid ester of sucrose and other constituents of Bhesa paniculata Phytochemistry 1995
Hydroxybenzoic acids from Boreava orientalis Phytochemistry 1995
Action of two strains of Streptomyces on aromatic substrates. Agricultural and Biological Chemistry 1986

This compound is available in the following databases:

KnowItAll IR Spectral Library
Author: Wiley

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KnowItAll Raman Spectral Library
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Wiley's KnowItAll Raman Spectral Library offers access to the world's largest collection of high-quality Raman spectra, including the renowned Sadtler databases. Learn more.

KnowItAll GC-MS Library
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The KnowItAll Mass Spectral Library offers a comprehensive collection of mass spectra, including the renowned Wiley Registry, and access to a wide range of compounds including pure organics, drugs, steroids, additives, geochemicals, petrochemicals, biomarkers, and more. Learn more.

Wiley Registry of Mass Spectral Data 2026
Author: Wiley

The foundation library for any analytical laboratory running mass spectrometry, the Wiley Registry provides the broadest coverage available in any mass spectral library Learn more.

Isovanillic acid
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