L-Carnitine

L-Carnitine

Synonym: Levocarnitine

CAS Number: 541-15-1

Molecular Formula: C₇H₁₅NO₃

Molecular Weight: 161.20 g/mol

Structure: Naturally occurring quaternary ammonium compound involved in fatty acid transport

Overview

L-Carnitine is a naturally occurring molecule synthesized from the amino acids lysine and methionine. It plays a critical role in cellular energy metabolism by facilitating the transport of long-chain fatty acids into mitochondria, where they may undergo beta-oxidation.

Due to its central role in energy production, L-Carnitine is widely studied in research involving mitochondrial function, lipid metabolism, metabolic regulation, and cellular bioenergetics.

Mechanism of Action

L-Carnitine functions primarily as a transporter of fatty acids across the mitochondrial membrane.

• Fatty Acid Transport
  • Facilitates movement of long-chain fatty acids into mitochondria
  • Supports beta-oxidation pathways involved in energy production
• Mitochondrial Metabolism
  • Assists in maintaining mitochondrial energy generation processes
  • Contributes to efficient utilization of lipid substrates
• Acyl Group Regulation
  • Participates in the transport and buffering of acyl compounds
  • Supports metabolic flexibility during changing energy demands
• Cellular Energy Homeostasis
  • Influences pathways involved in energy utilization and substrate metabolism
  • Supports overall bioenergetic balance within cells

Its biological importance stems from its role as a key mediator between lipid metabolism and mitochondrial function.

Pharmacokinetic Characteristics

• Naturally present in mammalian tissues
• Highest concentrations found in skeletal muscle and cardiac tissue
• Transported via specialized carnitine transport systems
• Participates in endogenous metabolic recycling pathways

Structural Characteristics

L-Carnitine is characterized by:

• A quaternary ammonium structure
• High water solubility
• Endogenous synthesis from lysine and methionine
• Essential role in mitochondrial fatty acid transport

Its structure enables interaction with enzymes involved in the carnitine shuttle system responsible for intracellular lipid transport.

Research Applications

L-Carnitine is commonly studied in research involving:

• Mitochondrial function
• Fatty acid metabolism
• Cellular energy production
• Metabolic flexibility
• Bioenergetics
• Lipid utilization pathways

It remains a widely utilized research compound for investigations examining the relationship between energy metabolism and mitochondrial activity.

Handling & Stability

• Typically supplied as a sterile solution or lyophilized material
• Store according to manufacturer specifications
• Protect from excessive heat and prolonged light exposure
• Avoid contamination during handling
• Maintain appropriate storage conditions for long-term stability

Note

This material is intended for laboratory research use only and is not approved for human or veterinary applications.