Pentanoic acid, butyl ester

Pentanoic acid, butyl ester structural formula

CAS Number591-68-4
Molecular FormulaC9H18O2
Molecular Weight158.241
  • Pentanoic acid, butyl ester
  • Butyl pentanoate
  • 591-68-4
  • Butyl pentanoate
  • Butyl valerianate
  • EINECS 209-728-5
  • FEMA No. 2217
  • Valeric acid, butyl ester
  • UNII-F93Z6CCM06
  • Butyl valerate
  • FEMA 2217
  • N-Butyl pentanoate
  • N-Butyl valerate


Separation of Pentanoic acid, butyl ester on Newcrom R1 HPLC column

February 16, 2018
Separation of Pentanoic acid, butyl ester on Newcrom C18 HPLC column

Pentanoic acid, butyl ester 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:
Pentanoic acid, butyl ester
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.