- OP Labs formerly Oxford Peptides
- Batch manufactured to defined specification
- Store in a cool dark place
- Sold for research purposes only
- Contact us for Wholesale Orders
Download COA here: L-Carnitine_COA.pdf
Please note: if you have a different Batch ID, please contact us for the latest COA.
L-Carnitine
Synonyms / Designations: L-Carnitine, Levocarnitine, (R)-3-hydroxy-4-(trimethylazaniumyl)butanoate
CAS Number: 541-15-1
Molecular Formula: C7H15NO3
Molecular Weight: 161.20 g/mol
Chemical Classification: Naturally occurring quaternary ammonium compound; zwitterionic small molecule
Purity: Manufactured to ≥ 99 % chemical purity (typical, specification-based)
Appearance: Clear liquid.
Pack Size: 10ml
Storage: Store in a cool dark place. Discard 30 DAYS after opening.
Description & Mechanism
L-Carnitine is a naturally occurring small molecule involved in mitochondrial fatty acid metabolism. In biochemical and cellular research systems, L-Carnitine functions as a carrier molecule facilitating the transport of long-chain fatty acids across the inner mitochondrial membrane via the carnitine shuttle mechanism.
Within experimental models, L-Carnitine participates in reversible esterification reactions with acyl-CoA derivatives, forming acylcarnitines that are translocated into the mitochondrial matrix for β-oxidation. This process is central to studies of cellular energy metabolism, mitochondrial function, and lipid handling under controlled laboratory conditions.
L-Carnitine is widely used as a reference compound in metabolic research due to its well-characterised chemical structure, stability, and conserved biochemical role across species.
Applications in Research
- As a molecular tool for studying mitochondrial fatty acid transport mechanisms
- Investigation of cellular energy metabolism and β-oxidation pathways
- Use as a reference compound in metabolic, enzymatic, and transporter assays
- In vitro and ex vivo studies examining acylcarnitine formation and turnover
Handling & Stability
- Store in a cool dark place. Discard 30 DAYS after opening.
- Shelf life: 36 MONTHS from production
Specifications Summary
Purity: ≥ 99 %
Appearance: Clear liquid
Molecular Weight: 161.20 g/mol
Chemical Type: Quaternary ammonium compound
Solubility: Water
Storage: Store in a cool dark place. Discard 30 DAYS after opening
Pack Size: 10ml
Precautions & Notes
- Experimental behaviour of L-Carnitine may depend on concentration, cellular model, and metabolic state
- Ionic strength and pH of assay buffers may influence transport and binding interactions
- Appropriate controls are recommended to distinguish specific metabolic effects from osmotic or ionic effects
- Intended strictly for laboratory research use; not for human or veterinary application
References
Bremer J. Carnitine—metabolism and functions. Physiological Reviews, 1983.
https://pubmed.ncbi.nlm.nih.gov/6361812/
McGarry J.D., Brown N.F. The mitochondrial carnitine palmitoyltransferase system. European Journal of Biochemistry, 1997.
https://pubmed.ncbi.nlm.nih.gov/9063439/
Hoppel C. The role of carnitine in normal and altered fatty acid metabolism. American Journal of Kidney Diseases, 2003.
https://pubmed.ncbi.nlm.nih.gov/12751049/
NIH PubChem. L-Carnitine. CID 10917.
https://pubchem.ncbi.nlm.nih.gov/compound/10917
Keywords: L-Carnitine, Levocarnitine, Carnitine Shuttle, Mitochondrial Metabolism, Fatty Acid Transport










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Great price.
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Bella’s support and service has been fantastic üôè
Joshua –
A+++
Richard –
Amazing
Anonymous –
Fast deliver, reasonable price and good product
Ian M. –
Great service
Tom –
Jason Monks –
Bigger vials please
Anonymous –
All good so far
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Excellent
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James B. –
Great service, great comms, quick delivery
Michelle S. –
Brilliant product very effective
Fred E. –
Never recieved
Lee P. –
Amazing peptide company
Anonymous –
10/10 definitely will continue to buy from this site! Plus fast deliveries!
william –
Great price
Steve J. –
Really quick delivery, good prices and has the desired effect. Have bought other items from Oxford peptides and always a good experience.
Matt –
James –
Bought this to take before the gym for added fat loss, fingers crossed it will work
Daniel C. –
Love this product and the quality from Oxford peptides is number 1
Steven Costa –
Jonathan Williams –
Darren E Bell –
Leon Galbraith –
Sylvia –
Anonymous –
Very quick delivery and very good product
Toni C. –
works well and fast shipping
Anonymous –
Amazing for fat loss and energy
Alex B. –
Perfect
Nichelle C. –
The best L-carnitine on the block. This one is a staple one of my must have aminos
Mate Janos Andrasi –
500 mg/ml, no PIP! Love it
Anonymous –
Works very well.
Steven C. –
Excellent service and product
Callum –
KEVIN C. –
Super fast postage and great products
Jonathan Lee –
chen yu tsang –
Good quality mix, less pip than other brands
Sebastian Schreiber –
Very disappointed, previously used difrent l carnitine wchich make me sweat at the gym at dosage of 800mg . Oxford peptide doesn’t work at 5ml 2500mg IM injection at all
Steven D. –
Excellent service and very quick delivery 5*
Rabi –
Good product, brilliant value for money, rapid dispatch. Recommended Company.
Andrew Walker –
Nichelle C. –
My new fav amino acid.
D J HAY –
Fantastic price and it’s certainly living up to expectations, highly recommended, will be purchasing these again.
Simon –
Is really hard to find properly dosed Carnitine at an affordable price. Will be buying again from here, does exactly as it should and is affordable to run for a decent amount of time. Very much appreciated!
Wulfric W. –
Amazing stuff, cheap and effective.
Tiffany –
Linden Lonsdale –
Same experience as always every order is the same . quality products with fast delivery and great value
Joshua Manapat Joshua Manapat –
great as a 1 hour before gym energy boost
Amr –
Authentic
Will Smith –
Raha A. –
Simon Pygall –
Excellent product…great value
Leon Galbraith –
Anonymous –
So easy to order, extremely quick despatch and delivery. Thank you!
Andreas Zenonos –
Sean T. –
Fast delivery fantastic product good price will buy again
Amr –
Catherine –
Quick delivery and great quality product!
Chris P. –
Undecided on this…lots of praise online for it, just not sure I’m feeling any benefits – and a daily needle üôà
Tom –
Pete Robinson –
Great value, fast delivery
Anonymous –
GARRY BLACKSTONE –
Very good pre workout
Mat –
Really good customer service and products
Garry –
Really, really good price
Natalia Komarnicka –
Joe –
John OMahony –
Arrived on time. All good.
Tim K. –
Mark France –
I believe it is a great product. Looking forward to try.
Ioan Vidroiu –