L-Carnitine — Compound Overview
A researcher-focused overview of L-carnitine: what the compound is, its chemistry, how it appears in the published literature, and how Index Peptides documents each batch.
Last updated: 2026-08-21 · By: Index Peptides technical team
Key facts about L-Carnitine
| Compound | L-Carnitine |
|---|---|
| Intended use | In-vitro laboratory research only |
What is L-carnitine?
L-Carnitine is a naturally occurring quaternary ammonium compound widely used as a biochemistry reagent. Index Peptides supplies it as a ready-to-use 10ml liquid research solution at 500mg/ml concentration, with identity verified per batch.
In this context L-carnitine is supplied strictly as a laboratory research material, not for human or animal consumption.
L-Carnitine in the research literature
L-Carnitine appears across a very large biochemistry and cell-biology literature concerned with mitochondrial biochemistry and related analytical work. Index Peptides takes no position on any application and supplies the material for laboratory research only.
Form, handling and storage
L-Carnitine is supplied as a ready-to-use liquid solution in a sealed vial. Store as directed on the batch record; stability data are batch-specific and recorded against the batch.
Batch documentation at Index Peptides
Review the published certificate for the exact lot, including the laboratory, report date and analytical results actually reported. HPLC purity alone does not confirm LC-MS identity. Contact us before ordering if a required result is not published.
Frequently asked questions
Who is L-carnitine supplied to?
Index Peptides supplies L-carnitine exclusively to qualified researchers and licensed laboratories, for in-vitro research only. It is not for human or veterinary use.
What is the CAS number for L-carnitine?
541-15-1, with a molecular weight of approximately 161.2 g/mol.
How is each batch verified?
Each batch's published documentation is linked from the product page, and any batch can be checked by lot number on the verify page.
What is the shelf life of L-Carnitine?
L-Carnitine is supplied as a liquid. Storage follows the label, and stability is documented per batch on the certificate of analysis; treat the batch record as the authoritative reference for that lot.
What is the difference between the sizes?
The difference is the nominal peptide content per vial. L-Carnitine is supplied as 10ml liquid at 500mg/ml. Every format carries the same batch documentation and purity testing.
What does the certificate of analysis show?
Review the published certificate for the exact lot, including the laboratory, report date and analytical results actually reported. HPLC purity alone does not confirm LC-MS identity. Contact us before ordering if a required result is not published.
References
Research use only. Not for human or animal consumption.