Carnitine is an analogue of a natural amino acid, of high chemical purity, and can be used as an analyte for constructing calibration graphs.

Isovalerylcarnitine chloride is an analogue of endogenous short-chain acylcarnitine and can be used as a control.

(C5DC) Glutarylcarnitine chloride is an endogenous metabolite, an ester of carnitine and glutaric acid.

Hexanoylcarnitine is an organic endogenous compound made from fatty acid and carnitine, a representative of medium-chain acylcarnitines.

Octanoylcarnitine, a representative of medium-chain acylcarnitines, an ester of a saturated fatty acid (octanoic acid) and the amino acid carnitine.

The L-enantiomer of the basic alpha amino acid arginine, of high chemical purity, can be used as a control for mass spectroscopy.

L-Citrulline is a non-proteinogenic alpha amino acid that can be used as a control in gas chromatography-mass spectrometry or in the standard addition method.

L-isomeric form of carnitine, labeled with deuterium for studies using mass spectrometry.

Isotopisch markiertes azetyliertes d3-Carnitin (C2-Carnitin-d3) wird für MS-Bildgebung und quantitative Messungen verwendet.

C3-Carnitin-d3 ist ein mit einem stabilen Isotop markierter Carnitin-Derivat, das zur Verfolgung von Carnitin und metabolischen Studien mittels Massenspektrometrie (MS) verwendet wird.

C4-Carnitin-d3, deuterierte Butyrat-Ester von Carnitin, der als stabil isotopenmarkierter interner Standard für quantitative Anwendungen verwendet wird.

Deuterium-labeled isovaleryl-L-carnitine is the standard for MS/MS quantitation of carnitine derivatives.

Glutaryl-L-carnitine-d6 chloride contains an isotopic label to be used as an internal standard for tandem mass spectrometry.

C6-Carnitine-d3 is one of the derivatives of the L-isomer of hexanoylcarnitine, labeled with stable isotopes.

Deuterated octanoyl-L-carnitine is used as an internal standard for the quantification of octanoyl-L-carnitine by GC or LC-MS.

D,L-Arginine-d3 is a labeled with stable isotop arginine, used in studies by mass spectrometry (MS).

D,L-Glutamic-2,4,4-d3 acid is a deuterium-labeled amino acid used as a standard for quantification of glutamic acid and glutamine by chromatographic methods with tandem mass spectrometry.

L-Citrulline-d2, deuterated citrulline used as stable isotope labeled internal standard for quantitative applications.

L-Leucine-5,5,5-d3 is the deuterium labeled amino acid L-Leucine.

L-Methionine-d3 is the deuterium labeled amino acid L-methionine.

Deuterated L-Ornithine used as stable isotope labeled internal standard for quantitative applications.

L-Phenylalanine-d5 is a stable isotope of amino acid phenylalanine.

L-Tyrosine-d4, deuterated amino acid tyrosine with a phenyl ring.

Retinol-d5 is a biologically active form of fat-soluble vitamin A, with a stable deuterium label for quantitative studies by MS methods.

alpha-Tocopherol-d6 is a deuterated form of vitamin E for mass spectrometry.

Melatonin-d3 is a deuterium-labeled primary pineal gland hormone, melatonin.