Purity >99% HPLC
RUO — Research use only
Not for human or veterinary use.
L-Carnitine 500mg
Research Compound · 500mg Lyophilised Powder
£19.99
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For research purposes only. Not for human or veterinary use. All products must be handled by qualified researchers in appropriate laboratory conditions.
Purity You Can Verify
Every batch undergoes High-Performance Liquid Chromatography (HPLC) and Mass Spectrometry (MS) analysis before release. Independent third-party testing confirms purity exceeds 99% for each batch — not as a target, but as a minimum standard. The batch-specific Certificate of Analysis is published on our COA page, where you can match your vial's batch number to its results.
Batch COA available on request
View COA library →Manufactured with Pharmaceutical-Grade Process Controls
Our UK facility operates under cGMP (current Good Manufacturing Practice) guidelines, applying pharmaceutical-grade process controls to research peptide production. Synthesis, purification, lyophilisation, and final packaging all follow documented SOPs with full batch traceability from raw material to dispatch.
Batch-Specific Documentation
Every vial is labelled with a unique batch number tied to its specific production batch. Match it to the Certificate of Analysis on our COA page for HPLC purity data, MS identity confirmation, and production date — giving researchers full traceability and reproducibility assurance for every experiment.
Batch COA available on request
View COA library →Stored and Shipped Correctly
Lyophilised peptides are stored at -20°C from the moment of production. Orders are dispatched in temperature-appropriate packaging with discreet, plain outer packaging. Same-day dispatch on orders placed before 3 pm (UK working days).
>99%
Purity verified per batch
16+
Compounds in catalogue
100%
Batch-tested before dispatch
About L-Carnitine 500mg
Research-context overview. Not medical advice. All products for research use only.
| Also known as | Levocarnitine · Vitamin BT |
| CAS Number | 541-15-1 |
| Molecular Formula | C7H15NO3 |
| Molecular Weight | 161.20 g/mol |
| Purity | >99% HPLC (independently verified) |
| Status | Research Use Only (RUO) · Not for human or veterinary use |
L-Carnitine (Levocarnitine) | Quaternary Ammonium Compound | Research Grade
Full Name: L-Carnitine (Levocarnitine) Also Known As: Vitamin BT Class: Quaternary ammonium / L-amino-acid derivative Molecular Formula: C₇H₁₅NO₃ Molecular Weight: 161.20 g/mol Purity: >99% (HPLC verified) Form: Lyophilised powder Available Size: 500mg CAS Number: 541-15-1
What Is L-Carnitine?
L-Carnitine (Levocarnitine; CAS 541-15-1) is a naturally occurring quaternary ammonium compound biosynthesised from lysine and methionine. It is supplied here as a lyophilised research compound at greater than 99% purity for laboratory use. Structurally, L-Carnitine carries a permanently positive charge at physiological pH — a property that governs its membrane transport via the organic cation/carnitine transporter OCTN2 (SLC22A5) and distinguishes it from free amino-acid analogues.
Its canonical biological role centres on the mitochondrial carnitine shuttle: long-chain acyl-CoA esters cannot cross the inner mitochondrial membrane directly. Carnitine palmitoyltransferase I (CPT1) at the outer mitochondrial membrane esterifies them to acylcarnitines; the acylcarnitine translocase (SLC25A20) carries the acylcarnitine across; and CPT2 at the inner membrane regenerates the acyl-CoA for β-oxidation. This shuttle is the rate-limiting gateway for long-chain fatty-acid entry into the mitochondrial matrix, making L-Carnitine a central research tool in studies of mitochondrial fuel selection and metabolic flexibility.
Research Context
Mitochondrial Stress Assays (Seahorse XF) L-Carnitine is a standard supplement in Seahorse XF Mito Fuel Flex and fatty acid oxidation assays. The Seahorse Fatty Acid Oxidation (FAO) assay requires L-Carnitine co-supplementation with long-chain fatty acids (palmitate–BSA) to enable mitochondrial import via CPT1. Without exogenous L-Carnitine, long-chain substrate utilisation is substantially limited in many cell lines, making it indispensable for accurate measurement of mitochondrial fatty-acid oxidation capacity.
Acylcarnitine Profiling Research into carnitine-shuttling defects and mitochondrial fatty acid oxidation (FAO) disorders typically relies on mass-spectrometric acylcarnitine profiling of conditioned media or cell lysates. L-Carnitine at defined research concentrations enables researchers to generate acylcarnitine profiles in cell-based models, study CPT1 isoform selectivity, and model carnitine transporter (OCTN2/SLC22A5) function.
Cellular Energy Metabolism Researchers studying mitochondrial biogenesis, fuel-switching, or metabolic flexibility in skeletal muscle myotubes, hepatocytes, and cardiomyocyte models routinely use exogenous L-Carnitine to ensure sufficient carnitine availability in serum-free or carnitine-depleted culture contexts.
Product Specifications
| Specification | Detail |
|---|---|
| Compound | L-Carnitine (Levocarnitine) |
| Also Known As | Vitamin BT, Levocarnitine |
| Class | Quaternary ammonium / L-amino-acid derivative |
| Molecular Formula | C₇H₁₅NO₃ |
| Molecular Weight | 161.20 g/mol |
| CAS Number | 541-15-1 |
| PubChem CID | 10917 |
| Purity | >99% (HPLC verified) |
| Form | Lyophilised powder |
| Appearance | White lyophilised powder |
| Solubility | Freely soluble in water |
| Vial Size | 500mg |
| Storage (lyophilised) | Sealed vial — cool, dark conditions (<25°C) |
| Storage (reconstituted) | 2–8°C; aliquot to avoid repeated freeze-thaw |
Handling & Storage
L-Carnitine lyophilised powder is freely soluble in sterile water. For in-vitro assays, reconstitute in the appropriate aqueous buffer (PBS or assay media) immediately before use. Once reconstituted, aliquot and store at 2–8°C; avoid prolonged exposure to elevated temperatures. Keep the sealed vial in a cool, dark environment until use. All handling should comply with standard laboratory safety protocols and applicable institutional guidelines.
Certificate of Analysis
Every batch of our L-Carnitine is independently tested and supplied with a Certificate of Analysis confirming purity by HPLC. Batch L7392 — Exp. 05/2029. Available on request and via the Nexyra Lab COA verification portal.
Important Notice
This product is intended strictly for in vitro research and laboratory use only. L-Carnitine supplied by Nexyra Lab is not approved for human or veterinary use by the FDA, EMA, or any other regulatory authority in this form. It is not a drug, supplement, or food product. This product must not be administered to humans or animals. By purchasing this product, the buyer confirms they are a qualified researcher and will use the compound solely for lawful scientific research purposes.
Technical datasheet
Identity
| Compound | L-Carnitine (Levocarnitine) |
| Class | Quaternary ammonium / L-amino-acid derivative |
| Also Known As | Vitamin BT, Levocarnitine |
| Molecular Formula | C7H15NO3 |
| Molecular Weight | 161.20 g/mol |
| CAS Number | 541-15-1 |
Physicochemical
| Form | Lyophilised powder |
| Purity | >99% (HPLC verified) |
| Appearance | White lyophilised powder |
| Solubility | Freely soluble in water |
Compliance
| Intended use | Research use only — not for human or veterinary use |
| Documentation | Batch-specific Certificate of Analysis with every order |
| Country of manufacture | United Kingdom |
| Quality standard | >99% purity, HPLC-verified, cGMP-compliant |
What's Included
Research-grade vial
Lyophilised powder, sealed under inert gas
Certificate of Analysis
Batch-specific HPLC & MS verification
Tamper-evident seal
Intact seal confirms product integrity
Discreet packaging
Plain, unbranded outer packaging
COA & Testing
Every batch of L-Carnitine 500mg is independently analysed by HPLC and Mass Spectrometry before dispatch. The Certificate of Analysis confirms purity, verifies molecular identity, and carries a unique batch number for full traceability.
Batch COA available on request
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How L-Carnitine 500mg Compares
Compare key research properties side by side with similar compounds. Switch compounds in the dropdowns to explore the full catalogue.
Purity and storage specifications are consistent across all Nexyra Lab lyophilised compounds. Pharmacokinetic data (half-life etc.) is not shown as it requires owner-confirmed verified references. For research planning and laboratory use only.
Resources & Support
Documentation, tools, and assistance for your research.
Frequently Asked Questions
Is this product for research use only?
Yes. All Nexyra Lab products are strictly for in vitro research and laboratory use by qualified researchers. They are not approved for human or veterinary use by the FDA, EMA, or any other regulatory authority.
Is a Certificate of Analysis (COA) available?
Yes. A batch-specific COA from our independent third-party testing laboratory is published on our COA page — match your vial's batch number to access HPLC purity data, MS identity confirmation, batch number, and production date.
What does the Certificate of Analysis confirm?
The COA confirms: (1) purity ≥99% by HPLC; (2) molecular identity by mass spectrometry; (3) the batch number for traceability; and (4) the production date. It is produced by an independent laboratory, not by Nexyra Lab itself.
How should lyophilised peptides be stored?
Store lyophilised (freeze-dried) peptides at -20°C in a sealed, dry container away from light and moisture. Avoid repeated freeze-thaw cycles. Once reconstituted, store at 4°C and use within 30 days for most peptides.
How do I reconstitute lyophilised peptides?
For most peptides, use sterile bacteriostatic water (BAC water) or sterile saline. Add the solvent slowly down the inside of the vial — do not inject directly onto the powder. Gently swirl until dissolved; do not shake. Use our Reconstitution Calculator at /peptide-calculator to determine the exact volume for your target concentration.
What are your dispatch and delivery times?
Orders placed before 3 pm on UK working days are dispatched same day. Standard UK delivery typically arrives within 1–3 working days. All orders are shipped in discreet, plain outer packaging with no reference to the contents.
What is your returns policy?
Due to the nature of research compounds and cold-chain requirements, we are unable to accept returns on opened products. If a product arrives damaged or incorrect, please contact our team within 48 hours of receipt and we will resolve the issue promptly.
What purity standard do your peptides meet?
All Nexyra Lab peptides are independently verified at ≥99% purity by HPLC before dispatch. Mass Spectrometry confirms molecular identity. This applies to every batch — the COA is batch-specific, not a generic certificate.
