analytical standard

L-Carnitine tetradecanoyl ester, Tetradecanoyl-L-carnitine, C14-Carnitine, (2R)-3-Carboxy-N,N,N-trimethyl-2-[(1-oxotetradecyl)oxy]-1-propanaminium inner salt
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:


analytical standard

Quality Level


≥97.0% (HPLC)

optical activity

[α]/D -18.0±2.0°, c = 1 in methanol

shelf life

limited shelf life, expiry date on the label


≤10.0% water



storage temp.


SMILES string




InChI key


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General description

Myristoyl-L-carnitine belongs to the acyl-L-carnitine class of compounds, which are acetylated forms of L-carnitine, derived from the breakdown of amino and fatty acids. The compounds are reported to be used as biomarkers in the diagnosis of carnitine deficiency.


Myristoyl-L-carnitine may be used as an analytical standard to determine the content of the analyte in maize plants using high-performance liquid chromatography coupled to triple quadrupole-LC MS/MS. The exogenous application of carnitine stimulates the transportation of fatty acids into mitochondria, and the possible effect of carnitine on the lipid trafficking between cytoplasm, mitochondrial matrix and the mitochondrial respiration in the leaves of maize grown under normal and cold conditions is investigated.
It may be used as an analytical reference standard in the following:
  • Separation and identification of underivatized myristoyl-L-carnitine in human plasma samples using high-performance liquid chromatography coupled to tandem mass spectrometry (HPLC-MS/MS).
  • Determination of the analyte in dried blood samples using high-performance liquid chromatography (HPLC) coupled with electrospray ionization-tandem mass spectrometry (ESI-MS/MS).


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Acylcarnitine profiling by low-resolution LC-MS
Meierhofer D , et al.
PLoS ONE, 14(8), The-The (2019)
Exogenous carnitine application augments transport of fatty acids into mitochondria and stimulates mitochondrial respiration in maize seedlings grown under normal and cold conditions
Turk H, et al.
Cryobiology, 91, 97-103 (2019)
Ralph Fingerhut et al.
Analytical chemistry, 81(9), 3571-3575 (2009-03-28)
Electrospray ionization-tandem mass spectrometry (ESI-MS/MS) is increasingly used in newborn screening programs. Acylcarnitine profiles from dried blood spots (DBS) are used to detect fatty acid oxidation disorders, carnitine cycle disorders, and organic acidurias. Stored dried blood is also a valuable...
Matrix effect?corrected liquid chromatography/tandem mass-spectrometric method for determining acylcarnitines in human urine
Abe K, et al.
Clinica Chimica Acta; International Journal of Clinical Chemistry, 468, 187-194 (2017)
Minzhi Peng et al.
Journal of chromatography. A, 1319, 97-106 (2013-10-31)
A simple HPLC-MS/MS method has been established to separate and identify underivatized acylcarnitine isomers. Human plasma samples were deproteinized and concentrated. Acylcarnitines were separated on a reverse phase column and detected with triple quadrupole linear ion trap mass spectrometry. Deuterium-labeled...

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