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4-bromo-3,5-dimethyl-1H-pyrazole

Compound with spectra: 17 NMR, 6 FTIR, 1 Raman, 3 UV-Vis, and 4 MS (GC)

4-bromo-3,5-dimethyl-1H-pyrazole
SpectraBase Compound ID BO4LUtV35Mg
InChI InChI=1S/C5H7BrN2/c1-3-5(6)4(2)8-7-3/h1-2H3,(H,7,8)
InChIKey RISOHYOEPYWKOB-UHFFFAOYSA-N
Mol Weight 175.03 g/mol
Molecular Formula C5H7BrN2
Exact Mass 173.979261 g/mol

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MS (GC) Spectrum
Copyright Copyright © 2002-2025 Wiley-VCH GmbH. All Rights Reserved.
Source of Spectrum Chemical Concepts, A Wiley Division, Weinheim, Germany

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

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

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MS (GC) Spectrum
Copyright Copyright © 2020-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Spectrum Y1-46-6835-6

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13C NMR Spectrum
Copyright Copyright © 1980, 1981-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Sample Aldrich Chemical Company, Inc., Milwaukee, Wisconsin
Solvent Polysol; Reference=TMS Spectrometer= Varian CFT-20

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13C NMR Spectrum
Copyright Copyright © 2002-2025 Wiley-VCH GmbH. All Rights Reserved.
Solvent DMSO-D6

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13C NMR Spectrum
Copyright Copyright © 2002-2025 Wiley-VCH GmbH. All Rights Reserved.
Solvent DMSO-D6

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13C NMR Spectrum
Copyright Copyright © 2002-2025 Wiley-VCH GmbH. All Rights Reserved.
Solvent CDCl3/DMSO-D6

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13C NMR Spectrum
Copyright Copyright © 2002-2025 Wiley-VCH GmbH. All Rights Reserved.
Solvent DMSO-D6

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13C NMR Spectrum
Copyright Copyright © 2002-2025 Wiley-VCH GmbH. All Rights Reserved.
Solvent CDCl3/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

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

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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 © 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 B64407
Solvent CDCl3

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1H NMR Spectrum
Copyright Copyright © 2009-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Sample Aldrich Chemical Company, Inc., Milwaukee, Wisconsin
Solvent CDCl3

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1H NMR Spectrum
Copyright Copyright © 2016-2025 Chemical Block, Russia, Leninsky Prospect 47 - Database Compilation Copyright © 2016-2025 John Wiley & Sons, Inc. All Rights Reserved.
Solvent DMSO-d6

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1H NMR Spectrum
Copyright Copyright © 2016-2025 Chemical Block, Russia, Leninsky Prospect 47 - Database Compilation Copyright © 2016-2025 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 B64407
Solvent CDCl3

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15N NMR Spectrum
Copyright Copyright © 2016-2025 W. Robien, Inst. of Org. Chem., Univ. of Vienna. All Rights Reserved.
Solvent SOLID_STATE

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Raman 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 A11759

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FTIR Spectrum
Copyright Copyright © 1980, 1981-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Sample Aldrich Chemical Company, Inc., Milwaukee, Wisconsin
Technique KBr WAFER

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FTIR Spectrum
Copyright Copyright © 2018-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Sample Alfa Aesar, Thermo Fisher Scientific
Source of Spectrum Bio-Rad Laboratories, Inc.
Catalog Number A11759
Technique KBr0

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ATR-IR Spectrum
Copyright Copyright © 2018-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Sample Alfa Aesar, Thermo Fisher Scientific
Source of Spectrum Bio-Rad Laboratories, Inc.
Catalog Number A11759

View Spectrum of 4-bromo-3,5-dimethyl-1H-pyrazole

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 B64407

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

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

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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 © 2018-2025 Sigma-Aldrich Co. LLC. - Database Compilation Copyright © 2018-2025 John Wiley & Sons, Inc. All Rights Reserved.
Source of Sample Aldrich
Source of Spectrum Sigma-Aldrich Co. LLC.
Catalog Number B64407

View Spectrum of 4-bromo-3,5-dimethyl-1H-pyrazole

Vapor Phase IR 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 B64407
  • 3,5-Dimethyl-4-bromopyrazole
  • 4-Bromo-3,5-dimethylpyrazole
  • Pyrazole, 4-bromo-3,5-dimethyl-
  • 4-BROM-3,5-DIMETHYL-PYRAZOLE
  • RISOHYOEPYWKOB-UHFFFAOYSA-N
  • 4-BROM-3,5-DIMETHYLPYRAZOL
  • 1H-pyrazole, 4-bromo-3,5-dimethyl-
  • 4-Bromanyl-3,5-dimethyl-1H-pyrazole
  • EINECS 222-263-2
  • GF 12
  • NSC 50564
  • BRN 0108534
3,4,5-Trimethyl-pyrazole
4-Bromo-3-methylpyrazole
4-FLUORO-3,5-DIMETHYL-1H-PYRAZOLE
4-Ammonio-3,5-dimethyl-2-pyrazolium cation
LNVWRBNPXCUYJI-UHFFFAOYSA-N
3,5-DIMETHYLPYRAZOLE-HCL-SALT
3,5-DIAMINO-4-BROMOPYRAZOLE
SVRPUGWCOWUQOY-UHFFFAOYSA-N
3,4,5-Tribromo-1H-pyrazole
3,4-dimethylpyrazole
Title Journal or Book Year
Enantioselective Enol Lactone Synthesis under Double Catalytic Conditions Organic Letters 2005
Substituent effects on the15N NMR Parameters of Azoles Magnetic Resonance in Chemistry 1997
13C NMR of pyrazoles Magnetic Resonance in Chemistry 1993
High resolution 13C nuclear magnetic resonance spectra of solid pyrazoles. Application to annular tautomerism Canadian Journal of Chemistry 1988
13C NMR chemical shifts ofN-unsubstituted- andN-methyl-pyrazole derivatives Organic Magnetic Resonance 1984

This compound is available in the following databases:

KnowItAll IR Spectral Library
Author: Wiley

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The KnowItAll NMR Spectral Library offers a comprehensive collection of NMR reference spectra, including NMR, CNMR, and XNMR, and covers a wide range of compounds including organics, polymers, monomers, metabolites, 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.

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