4-Chlorophenoxyacetic acid

CAS Number122-88-3
Molecular FormulaC8H7ClO3
Molecular Weight186.59
InChI KeySODPIMGUZLOIPE-UHFFFAOYSA-N
LogP2.2
Synonyms
  • 4-CHLOROPHENOXYACETIC ACID
  • 122-88-3
  • (4-Chlorophenoxy)acetic acid
  • Sure-Set
  • Acetic acid, (4-chlorophenoxy)-
  • Tomato Fix
  • p-Chlorophenoxyacetic acid
  • Tomato hold
  • (p-Chlorophenoxy)acetic acid
  • 4CPA
  • Acetic acid, (p-chlorophenoxy)-
  • Parachlorophenoxyacetic acid
  • BI 12
  • NSC 8769
  • TOMATONE
  • 4EMM3U5P3K
  • DTXSID9034282
  • CHEBI:1808
  • DTXCID7014282
  • NSC-9213
  • RefChem:98595
  • 204-581-3
  • 4-Chlorophenoxyacetate
  • PCPA
  • 2-(4-chlorophenoxy)acetic acid
  • 4-CPA
  • Tomatotone
  • 4-CP
  • Marks 4-cpa
  • Acetic acid, 2-(4-chlorophenoxy)-
  • Kyselina 4-chlorfenoxyoctova
  • para-Chlorophenoxyacetic acid
  • MFCD00004305
  • 4-Chlorphenoxyessigsaeure
  • NSC-8769
  • A1IHP
  • Caswell No. 204
  • CCRIS 1465
  • HSDB 3944
  • EINECS 204-581-3
  • Kyselina 4-chlorfenoxyoctova [Czech]
  • UNII-4EMM3U5P3K
  • EPA Pesticide Chemical Code 019401
  • BRN 1211804
  • 4-CPA [ISO]
  • AI3-30799
  • (4-chloro-phenoxy)-acetic acid
  • 2-(4-Chloro-phenoxy)acetic acid
  • 4-chlorophenoxyactic acid
  • WLN: QV1OR DG
  • 4-chlorophenoxy acetic acid
  • Cambridge id 5511235
  • metformin chlorphenoxyacetate
  • CH-100 FREE ACID
  • SCHEMBL40485
  • 4-06-00-00845 (Beilstein Handbook Reference)
  • SCHEMBL324953
  • (4-chlorophenoxy)-acetic acid
  • (2-chlorophenoxy)ethanoic acid
  • CHEMBL178018
  • orb2941090
  • SCHEMBL11642577
  • SCHEMBL14855662
  • NSC8769
  • [(4-Chlorophenyl)oxy]acetic acid
  • MSK22683
  • Tox21_300744
  • 4-Chlorophenoxyacetic acid (4-CPA)
  • BBL007585
  • SBB004537
  • STK116608
  • AKOS000103793
  • AB00355
  • FC01864
  • NCGC00164254-01
  • NCGC00164254-02
  • NCGC00254650-01
  • 4-CHLOROPHENOXYACETIC ACID [HSDB]
  • AC-10963
  • AS-12913
  • CAS-122-88-3
  • HY-19698
  • DB-041694
  • 4-Chlorophenoxyacetic acid, >=98.0% (T)
  • CS-0016291
  • NS00015495
  • ST45161748
  • EN300-18120
  • A50588
  • C07088
  • AE-641/30397036
  • F358213
  • L000201
  • Q4637113
  • Z57181989
  • F0777-0788
  • 4-Chlorophenoxyacetic acid, PESTANAL(R), analytical standard
  • 4-Chlorophenoxyacetic acid, BioReagent, plant cell culture tested, crystalline

Applications:

Uv-Vis Spectrum of 4-Chlorophenoxyacetic acid

March 17, 2026

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If you are looking for optimized HPLC method to analyze 4-Chlorophenoxyacetic acid check our HPLC Applications library

For optimal results in HPLC analysis, it is recommended to measure absorbance at a wavelength that matches the absorption maximum of the compound(s) being analyzed. The UV spectrum shown can assist in selecting an appropriate wavelength for your analysis. Please note that certain mobile phases and buffers may block wavelengths below 230 nm, rendering absorbance measurement at these wavelengths ineffective. If detection below 230 nm is required, it is recommended to use acetonitrile and water as low UV-transparent mobile phases, with phosphoric acid and its salts, sulfuric acid, and TFA as buffers.
For some compounds, the UV-Vis Spectrum is affected by the pH of the mobile phase. The spectra presented here are measured with an acidic mobile phase that has a pH of 3 or lower.

Application Analytes:
4-Chlorophenoxyacetic acid
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.