(C26) D,L-Carnitine is a very long chain fatty-acylcarnitine also known as o-hexacosanoylcarnitine and intended for use as an internal standard in GC- or LC-MS.

C26:0-lysophosphatidylcholine-d4 is deuterated C26:0-lysophosphatidylcholine (Lysopc(26:0)) and intended for use as an internal standard for the quantification of C26:0-lysophosphatidylcholine by GC- or LC-MS.

Acetyl-L-carnitine is a short-chain acylcarnitine that is used as a control for MS/MS.

Isotopically labeled acetylated d3-carnitine, C2 Carnitine-d3, is used for MS imaging and quantitative measurements.

C3 Carnitine-d3 is a labeled with stable isotop of carnitine derivative is used for tracking of carnitine and metabolic studies by mass spectrometry (MS).

An analytical reference standard for the separation and identification of underivatized butyryl-L-carnitine using high-performance liquid chromatography coupled to tandem mass spectrometry (HPLC-MS/MS).

C4 Carnitine-d3, deuterated butyrate ester of carnitine used as stable isotope labeled internal standards for quantitative applications.

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

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

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