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Quick Specs
CAS No.541-15-1 (Base)
Purity≥99% (HPLC)
AppearanceWhite crystalline powder
Shelf life24–36 months
MOQ1 kg (sample); 5 kg (commercial)
Nutraceuticals

L-Carnitine

L-Carnitine Base L-Tartrate ALCAR ≥99% Purity
The essential fatty acid transporter — fuelling mitochondrial energy production, sports endurance, fat metabolism, and male reproductive health across four commercially distinct supplement categories.
L-Carnitine sits at the intersection of sports nutrition, weight management, male fertility, and cardiovascular health — making it one of the most broadly formulated nutraceutical ingredients globally. Its biological mechanism is precise: without sufficient carnitine, long-chain fatty acids cannot cross the inner mitochondrial membrane, and the cell's primary fat-burning pathway is blocked. It is one of the more established ingredients in the sports and weight-management categories, and is widely specified in consumer supplements.

SV Botanica supplies four distinct L-Carnitine forms to serve the full range of formulation needs — from fast-absorbing sports nutrition (L-Tartrate) to nootropic blends (ALCAR) and clinical cardiovascular therapy (Propionyl-L-Carnitine). Each form is tested at ≥99% purity by HPLC and exported with full quality documentation.
Available specifications
L-Carnitine Base≥99% (HPLC)
L-Carnitine L-Tartrate≥99% (HPLC)
Acetyl-L-Carnitine (ALCAR)≥99% (HPLC)
Propionyl-L-CarnitineAvailable on request
  • Hygroscopicity — the governing handling constraint. The base form in particular picks up moisture readily, which is why the L-tartrate salt is often specified for powder blends and tabletting where flow and stability matter more than carnitine content per gram.
  • Form selection — the free base carries the highest carnitine content by weight; L-tartrate is more stable and free-flowing; ALCAR is the acetylated ester. They are not interchangeable on a weight basis, so confirm which your specification is written against.
  • Solubility — freely soluble in water, so all forms carry readily in aqueous and beverage systems.
  • Moisture specification — NMT 1.0%, with airtight, moisture-barrier packaging throughout. Reseal promptly after part-use; exposed material will gain moisture.
  • Shelf life — 24 to 36 months depending on form and storage, longer than most amino acids in the range, provided the moisture barrier is maintained.
  • Packaging — 1 kg double-sealed food-grade aluminium foil bags, and 5 kg and 25 kg fibre drums with food-grade inner liners. Custom pack sizes available for research and private-label orders.
  • Heavy metals — specified at NMT 10 ppm with lead at NMT 1 ppm, slightly wider on lead than the rest of the amino acid range; confirm this meets your incoming specification.
  • Documentation — each batch ships with a CoA covering assay by HPLC against the ≥99% specification for the stated form, heavy metals, moisture at NMT 1.0% and microbial limits.
Sports and pre-workout formats
Weight-management category products
Functional beverages and RTD
Capsule and tablet supplements
Clinical and medical nutrition
Powder blends and stick packs
Pet and animal nutrition
Private-label and contract manufacture
IUPAC name(3-Carboxy-2-hydroxypropyl)trimethylammonium hydroxide inner salt
Molecular formulaC₇H₁₅NO₃
Molecular weight161.20 g/mol
CAS number541-15-1 (Base); 36687-82-8 (L-Tartrate); 5080-50-2 (ALCAR)
IsomerL-isomer (biologically active); confirmed by optical rotation
Optical rotation[α]D ≥ +29° (verified per batch)
AppearanceWhite to off-white crystalline powder (hygroscopic)
SolubilityFreely soluble in water; slightly soluble in ethanol
Purity (HPLC)≥99%
Moisture contentNMT 1.0%
Heavy metalsNMT 10 ppm; Lead NMT 1 ppm
Melting point197–212°C (L-Carnitine Base)
Shelf life24–36 months (sealed, cool, dry)
Microbial limitsComplies with USP/BP standards
StorageBelow 25°C, airtight container, away from humidity
1 kg aluminium foil bags (double-sealed, food-grade)
5 kg and 25 kg fibre drums with food-grade inner liners
Moisture-proof, airtight export-grade packaging
Custom pack sizes for research and private-label orders
Quality Assurance

Tested at Every Stage

Every L-Carnitine batch is HPLC-verified for purity and optical rotation, tested for heavy metals and microbial safety, and shipped with full documentation.

01

Purity & identity

HPLC purity (≥99%), optical rotation ([α]D ≥ +29°), and IR identification confirmed per batch.

02

Safety testing

Heavy metals (lead, arsenic, mercury, cadmium) and microbial panel (TPC, E.coli, Salmonella) per USP standards.

03

Chirality verified

L-isomer (not D-Carnitine) confirmed by optical rotation. D-Carnitine is biologically inactive and contraindicated.

04

Export-ready documentation

COA, MSDS, Phytosanitary Certificate, and full export documents prepared before every shipment.

Formulation Guide

Choosing the Right Form of L-Carnitine

Not all L-Carnitine forms are interchangeable. The correct choice depends on your target health benefit, formulation format, and consumer segment. Understanding the differences between forms is critical to both product efficacy and label claim compliance.

L-Carnitine Base

CAS: 541-15-1

The pure free-form amino acid derivative. Highest carnitine content per gram. Ideal for capsules, tablets, and liquid supplement formulations where maximum carnitine delivery per serving is the priority. Slightly hygroscopic — requires moisture-controlled processing.

L-Carnitine L-Tartrate (LCLT)

CAS: 36687-82-8

Salt form with superior flow properties and faster absorption kinetics. The #1 form used in sports nutrition. Excellent stability and flowability for powder blends, stick packs, and pre-workout formulations. Preferred by sports supplement brands globally.

Acetyl-L-Carnitine (ALCAR)

CAS: 5080-50-2

The acetylated ester of L-carnitine, supplied at ≥99% by HPLC. It is the form normally specified in the cognitive and nootropic categories; assay basis differs from the base and tartrate forms, so confirm which your specification is written against.

Propionyl-L-Carnitine

CAS: 119793-66-7

A specialised ester supplied on request. Less commonly specified than the base, tartrate or ALCAR forms in general sports nutrition; targeted at clinical and Rx-adjacent products.

Buyer FAQs

Common Questions about L-Carnitine Sourcing

The free base, L-carnitine L-tartrate and acetyl-L-carnitine (ALCAR), all at ≥99% by HPLC, with propionyl-L-carnitine available on request.
The free base carries the highest carnitine content by weight; the L-tartrate salt is more stable and free-flowing, which suits powder blends and tabletting; ALCAR is the acetylated ester. They are not interchangeable on a weight basis, so confirm which form your specification is written against.
L-carnitine, and the free base in particular, picks up atmospheric moisture readily. That is the main handling constraint and the usual reason formulators specify the tartrate salt. Material ships in double-sealed, airtight, moisture-barrier packaging; reseal promptly after part-use.
Assay by HPLC against the ≥99% specification for the stated form, heavy metals at NMT 10 ppm with lead at NMT 1 ppm, moisture at NMT 1.0%, and microbial limits.
The specification for this material is set at NMT 1 ppm for lead, slightly wider than most of the amino acid range in our catalogue. If your incoming specification requires NMT 0.5 ppm, tell us at enquiry so we can confirm against batch data before you commit.
White to off-white crystalline powder, hygroscopic, at 40–80 mesh. Moisture NMT 1.0%. Shelf life 24 to 36 months sealed, cool and dry, provided the moisture barrier is maintained.
It is freely soluble in water and only slightly soluble in ethanol, so all forms carry readily in aqueous and ready-to-drink systems.
1 kg double-sealed food-grade aluminium foil bags, and 5 kg and 25 kg fibre drums with food-grade inner liners, in moisture-proof airtight export packaging. Custom pack sizes are available for research and private-label orders.
Against your specification and volume. Form, grade and pack size all move the price substantially, so state which form you need at enquiry.
Also from SV Botanica

Related Nutraceutical Ingredients

Frequently co-formulated with L-Carnitine across sports, weight, and health segments.

Supplied as a bulk ingredient for further manufacture. Buyers are responsible for compliance with the regulations of their destination market. This product is not intended to diagnose, treat, cure or prevent any disease.