If a supplied lot fails agreed specifications, we’ll replace it at no cost or refund its purchase price in full.
Quality test failed? Free replacement or full refund.
Off-spec? Free replacement or full refund.
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Reference standard · Research use only
Fatty-acid-transport small-molecule reference standard
Price, MOQ and lead time come in your written quote — usually within 24 hours. No account needed.
Compound facts
| Name | L-Carnitine |
|---|---|
| CAS number | 541-15-1 |
| PubChem CID | 10917 |
| Molecular formula | C7H15NO3 |
| Molecular weight | 161.20 g/mol |
| Purity specification (HPLC) | ≥ 99.0% |
| On every batch COA | RP-HPLC purity · ESI-MS identity · Bacterial endotoxin · Fill amount (content per vial) |
| On request | LC-MS/MS sequence confirmation · Net peptide content · Water content (Karl Fischer) · Counter-ion content (e.g. acetate, TFA) · Microbial limits |
| Storage | Room temperature, protect from light |
| Strengths per vial | 2 mg · 600 mg · 1200 mg · 10 ml |
| Pack | 10 vials per kit |
| MOQ | On request |
| Lead time | 7–14 days |
| Use | Research use only — not for human or veterinary use |
Identity data from the Lyochem product catalogue, checked against PubChem and registry records. The batch COA of your lot is the record for that lot's results. How to verify a COA
Lot documentation
Values belong to the lot. Ask for the COA of the offered lot before you order.
Independent test fails? Full refund. How it works
Overview
L-Carnitine (3-hydroxy-4-trimethylammoniobutanoate) is a quaternary-ammonium small molecule that shuttles long-chain fatty acids across the inner mitochondrial membrane through the carnitine-palmitoyltransferase (CPT) system — the step that makes long-chain β-oxidation possible at all. That role places it in the mitochondrial and cellular-energetics reference set, where it is used as a characterized standard in fatty-acid-oxidation and muscle-energetics studies. It is described here as an analytical standard, not for any metabolic-support outcome. Lyochem supplies L-Carnitine as a reference standard to a ≥99.0% purity specification. Because it is a small molecule rather than a peptide, the analytical workflow is matched to its polar, zwitterionic, quaternary-ammonium chemistry: HILIC or ion-exchange HPLC for chemical purity (plain reverse-phase is ineffective without modified conditions), mass-spec confirmation at 161 Da for the molecular ion, with chiral HPLC or polarimetry available on request to confirm the L-enantiomer, since D-carnitine is the inactive enantiomer and should be absent from reference-grade material. Residual-solvent screening is also available on request and listed on the COA when tested. It is supplied as pre-prepared aqueous-solution fills (2 mg, 600 mg and 1200 mg).
Applications & buyer fit
Mitochondrial-targeted peptides — MOTS-c, SS-31 / Elamipretide — and the mitochondrial-targeting small-molecule reagents (NAD+, AICAR, 5-Amino-1MQ) ship to research labs studying OXPHOS, ROS biology, sirtuin-mediated deacetylation, and mitochondrial dysfunction in disease models. The lipophilic / cationic character that drives mitochondrial accumulation also makes some peptides oxidation-prone in solution; working stocks should be prepared fresh or held at −80 °C when the workflow permits.
Academic Laboratories
Universities, medical schools, and government research institutes qualifying a reference standard for a method-development or in vivo workflow.
Biotech R&D Groups
Preclinical biotech and pharmaceutical discovery teams sourcing characterized peptides for receptor-pharmacology, screening, and method-development campaigns.
Every lot has its own batch-specific CoA — RP-HPLC purity, ESI-MS identity, bacterial endotoxin and fill amount, plus any analytical scope agreed at quote stage — tied to the exact lot you receive.
Review a representative batch CoA before you order, so you can confirm the packet matches what your method or sponsor audit needs.
Supplied strictly as a research reagent to research institutions — not a finished dosage form and not for human administration. Buyer qualification runs at the inquiry stage.
Regulatory note
Lyochem supplies L-Carnitine strictly for Research Use Only; buyers are responsible for verifying ingredient eligibility in their destination market.
Selected literature
Frequently asked questions
L-carnitine is released against RP-HPLC or ion-chromatography purity plus a mass check by ESI-MS against the expected small-molecule mass; where the research requires the L-enantiomer specifically, chiral HPLC confirms enantiomeric purity against the inactive D-form. Because carnitine is hygroscopic, water content and counter-ion are worth requesting; they are listed on the COA when tested.
L-carnitine is highly hygroscopic and water-soluble, so Lyochem ships it with water-content data and recommends resealing under dry conditions and preparing working solutions fresh. For quantitative work, apply the net-content and counter-ion figures, where reported on the COA, to correct nominal mass to actual free-base or salt content.
Send any vial from your order to an independent laboratory of your choice. If the report shows the product does not meet the specification on its COA — purity below the stated minimum, or an identity that does not match — share the report with our sales team and we refund that product in full.
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