MCPA-sodium structural formula

CAS Number3653-48-3
Molecular FormulaC9H8ClNaO3
Molecular Weight222.601
  • MCPA-sodium
  • Sodium (4-chloro-2-methylphenoxy)acetate
  • Acetic acid, 2-(4-chloro-2-methylphenoxy)-, sodium salt (1:1)
  • 3653-48-3
  • 2M-4KH sodium salt
  • Caswell No. 557K
  • 4-Chloro-2-methylphenoxyacetic acid sodium salt
  • (p-Chloro-o-tolyloxy)acetic acid sodium salt
  • Chwastoks
  • Chwastox
  • Chwastox 80
  • Dicotex
  • Dikoteks
  • EINECS 222-895-9
  • EPA Pesticide Chemical Code 030502
  • Estermine
  • Hedonal M80
  • Metaxone
  • Methoxon
  • Methoxone 30
  • (2-Methyl-4-chlorophenoxy)acetic acid, sodium salt
  • Phenoxylene
  • Sodium (4-chloro-2-methylphenoxy)acetate
  • Sodium MCPA
  • Sodium (2-methyl-4-chlorophenoxy)acetate
  • MCP sodium salt
  • Hedonal M 80
  • Chwastox plynny 30
  • Dikotex
  • Dikotex P
  • Methoxone sodium salt
  • 11100-01-9
  • 11114-06-0


Separation of MCPA-sodium on Newcrom R1 HPLC column

February 16, 2018
Separation of MCPA-sodium on Newcrom C18 HPLC column

MCPA-sodium can be analyzed by this reverse phase (RP) HPLC method with simple conditions. The mobile phase contains an acetonitrile (MeCN), water, and phosphoric acid. For Mass-Spec (MS) compatible applications the phosphoric acid needs to be replaced with formic acid. Smaller 3 µm particles columns available for fast UPLC applications. This liquid chromatography method is scalable and can be used for isolation impurities in preparative separation. It also suitable for pharmacokinetics.

Application Column

Newcrom R1

The Newcrom columns are a family of reverse-phase-based columns. Newcrom A, AH, B, and BH are all mixed-mode columns with either positive or negative ion-pairing groups attached to either short (25 Å) or long (100 Å) ligand chains. Newcrom R1 is a special reverse-phase column with low silanol activity.

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Application Analytes:
The result was obtained by a proprietary SIELC algorithm. It may deviate from the actual experimental data. The experimental data are available upon request. Contact us by e-mail: or by phone: 847-229-2629.