L-Carnitine (20ML) research solution at 600mg/ml for laboratory mitochondrial fatty acid transport, beta-oxidation, and metabolic flexibility studies.
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L-Carnitine (20ML) is a 600 mg/mL research solution of L-carnitine (levocarnitine), the (R)-enantiomer of 3-hydroxy-4-(trimethylazaniumyl)butanoate. L-carnitine is not an amino acid in the protein-building sense: it is a quaternary ammonium hydroxy acid made from lysine-derived 6-N-trimethyllysine (Vaz & Wanders, 2002) and present as a zwitterion (inner salt).
Its role in research is the carnitine shuttle: CPT1 forms acylcarnitine at the outer mitochondrial membrane, the acylcarnitine crosses the inner membrane, and CPT2 regenerates acyl-CoA in the matrix, with malonyl-CoA inhibition of CPT1 as the control point (McGarry & Brown, 1997). Carnitine acetyltransferase links the free carnitine pool to acetyl-CoA (Ramsay & Naismith, 2003).
Buy L-Carnitine that is batch-verified at Modern Aminos and supplied in a 20 mL Amber vial. The carrier is a water-based solution with benzyl alcohol (1%) as the preservative with a Per-mL composition of 600 mg/mL.
Laboratories building metabolic panels often place it next to public reference listings such as DADA (Diisopropylamine Dichloroacetate).
| Compound Name | L-Carnitine |
|---|---|
| Research Category | Carnitine Shuttle Substrate |
| Quantity / Formats Offered | 600 mg/mL (20 mL Vial) |
| Synonyms / Alt Names | L-Carn, levocarnitine |
| PubChem CID | 10917 |
| CAS Number | 541-15-1 |
| ChEBI | CHEBI:16347 |
| Chemical Formula | C7H15NO3 |
| Molecular Weight | 161.20 g/mol |
| UNII | 0G389FZZ9M |
| Exact Mass | 161.1052 Da |
| IUPAC Name | (3R)-3-hydroxy-4-(trimethylazaniumyl)butanoate |
| InChIKey | PHIQHXFUZVPYII-ZCFIWIBFSA-N |
| Carrier / Excipients | Aqueous solution w/ 1% benzyl alcohol (preservative) |
The pathway chemistry behind L-Carnitine (20ML) in laboratory research includes:
| Carnitine form | PubChem record | Relationship | In this product? |
|---|---|---|---|
| L-Carnitine | CID 10917, CAS 541-15-1 | Free acyl carrier for CPT1/CPT2 (McGarry & Brown, 1997) | Yes, 600 mg/mL |
| Acetyl-L-Carnitine HCl | CID 2733928, CAS 5080-50-2 | Acetyl ester formed by carnitine acetyltransferase (Ramsay & Naismith, 2003) | No |
Published reviews on the components of L-Carnitine (20ML) center on their pathway biochemistry:
To buy L-Carnitine and compare it to related research materials, the table shows other solutions and references available at Modern Aminos:
| Compound / Reference | Primary Target Class | Core Mechanism of Action | Research Focus & Profile |
|---|---|---|---|
| L-Carnitine (20ML) | Carnitine shuttle | Free L-carnitine at 600 mg/mL | CPT1/CPT2 acyl-transport assays |
| L-Carnitine / L-Arginine Based Amino Blend | Carnitine + urea-cycle amino acids | L-carnitine 400 with L-arginine HCl and L-ornithine HCl | Carnitine plus arginase branch |
| L-Carnitine / CDP Choline Based Amino Blend | Carnitine + CDP-choline | L-carnitine 200 with CDP-choline 300 mg/mL | Lipid transport and phosphatidylcholine synthesis |
| DADA (Diisopropylamine Dichloroacetate) | PDK inhibitor | Inhibits pyruvate dehydrogenase kinase | Pyruvate vs fatty-acid fuel entry |
L-Carnitine (20ML) is available at Modern Aminos as a 20 mL research solution (SKU A-010). If you want to buy L-Carnitine as a documented reference material, each certificate is in the Certificate of Analysis tab.
Per the Modern Aminos manufacturing formula (SKU A-010), each mL contains L-Carnitine 600 mg/mL. Carrier: water-based solution with benzyl alcohol (1%) as the preservative.
No. L-carnitine is a single small molecule, a quaternary ammonium hydroxy acid, with no peptide bonds. It is supplied as a research solution, not as a supplement.
PubChem lists L-carnitine as CID 10917 with CAS 541-15-1, formula C7H15NO3, molecular weight 161.20 g/mol and InChIKey PHIQHXFUZVPYII-ZCFIWIBFSA-N; ChEBI lists it as CHEBI:16347.
L-carnitine has a permanently charged quaternary ammonium group and a carboxylate, so at neutral pH it exists as a zwitterion, or inner salt. PubChem lists it as CID 10917 (C7H15NO3, 161.20 g/mol).
They are enantiomers. L-carnitine is the (R)-enantiomer (ChEBI:16347), the form used by the carnitine palmitoyltransferases (McGarry & Brown, 1997); this product is L-carnitine.
The FreedomDiagnostics certificate for lot BX-A-D3L6 lists a net content of 601.79 mg/mL against the 600 mg/mL formula in the manufacturing formula.
From 6-N-trimethyllysine released by protein turnover, through four enzymatic steps ending at γ-butyrobetaine hydroxylase (Vaz & Wanders, 2002).
Acetyl-L-carnitine is the acetyl ester formed by carnitine acetyltransferase (Ramsay & Naismith, 2003); L-carnitine is the free carrier. Acetyl-L-carnitine appears in the Carnosine + Carnitine Based Amino Blend, while this product is L-carnitine alone.
One format: a 20 mL vial of solution at the per-mL amounts listed above. The vial label lists the per-mL ingredients, and the Certificate of Analysis tab lists the certificates for the current format.
The FreedomDiagnostics certificate for lot BX-A-D3L6 lists LC-MS identity (carnitine), HPLC-UV purity of 99.69%, net content of 601.79 mg/mL and a PCR microbial screen (no detectable microbial DNA). The finished format also lists a USP <71> sterility pass from Vanguard Laboratory (5/29/2026). For background on chromatographic testing, see why HPLC testing matters.
Keep the sealed vial cool, dry and away from light, and follow the label on each lot. No storage temperature is printed on the label or the certificates, so this page does not state one.
DISCLAIMER: All compounds and research materials supplied by Modern Aminos are intended exclusively for in vitro laboratory research by qualified professionals. They are not medicinal products and have not been authorised by the European Medicines Agency or any national competent authority for human or veterinary use. They are not foods, food supplements, cosmetics or medical devices. Products must not be administered to humans or animals by any route and must not be used for in vivo experimentation or any other non-laboratory purpose. We will refuse or cancel orders, and may close accounts, where there is any indication of human or animal use. By purchasing, you confirm that products will be used only in a controlled laboratory environment by appropriately qualified personnel, in line with all applicable laws.
All products are sold in powder (lyophilized) form and require reconstitution with a suitable diluent for research purposes only. Research supplies (e.g., syringes, bacteriostatic water) are not included. No dosing instructions are provided. We adhere to all local and state laws around Research Only Chemical sales. We are not a pharmacy, nor do we promote or provide any advice for human or animal consumption. Please review our terms and conditions carefully before making a purchase on our website.
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