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Impurities and reference standards

D-Carnitine

Also known as D-(+)-carnitine, (+)-Carnitine, (S)-carnitine

CAS 541-14-0Formula C7H15NO3Molar mass 161.20 g/molEC 625-884-0
GHS signal word: Warning. Pictograms: Harmful or irritant 4 suppliers listed
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D-Carnitine chemical structure, C7H15NO3, CAS 541-14-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
541-14-0
Formula
C7H15NO3
Molar mass
161.20 g/mol
EC number
625-884-0
HS code
292390
Category
Impurities and reference standards

What is D-Carnitine?

Plain description, key identifiers and synonyms

(S)-carnitine is the (S)-enantiomer of carnitine. It is a conjugate base of a (S)-carnitinium. It is an enantiomer of a (R)-carnitine.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(3S)-3-hydroxy-4-(trimethylazaniumyl)butanoate
CAS number
541-14-0
EC number
625-884-0
Molecular formula
C7H15NO3
UNII
U9VY0ZOK7A
MDL number
MFCD00083279
InChIKey
PHIQHXFUZVPYII-LURJTMIESA-N
InChI
InChI=1S/C7H15NO3/c1-8(2,3)5-6(9)4-7(10)11/h6,9H,4-5H2,1-3H3/t6-/m0/s1
Canonical SMILES
C[N+](C)(C)CC(O)CC(=O)[O-]
Isomeric SMILES
C[N+](C)(C)C[C@H](CC(=O)[O-])O

Synonyms

  • D-(+)-carnitine
  • (+)-Carnitine
  • (S)-carnitine
  • (3S)-3-hydroxy-4-(trimethylazaniumyl)butanoate
  • Carnitine, (+)-
  • Carnitine, d-
  • (3S)-3-hydroxy-4-(trimethylammonio)butanoate
  • (+)-d-Carnitine
  • S-(+)-3-hydroxy-4-trimethylaminobutyrate
  • 1-Propanaminium, 3-carboxy-2-hydroxy-N,N,N-trimethyl-, hydroxide, inner salt, (S)-
  • 1-Propanaminium, 3-carboxy-2-hydroxy-N,N,N-trimethyl-, inner salt, (2S)-
  • L-I3-Trimethyl-I2-hydroxybutyrobetaine
  • 1-Propanaminium, 3-carboxy-2-hydroxy-N,N,N-trimethyl-, hydroxide, inner salt, (S)-(9CI)
  • d(+)-carnitine
  • (S)-3-Hydroxy-4-(trimethylammonio)butanoate
  • Carnitine D-form
  • D-(3-Carboxy-2-hydroxypropyl)trimethylammonium hydroxide, inner salt
  • Ammonium, (3-carboxy-2-hydroxypropyl)trimethyl-, hydroxide, inner salt, D-
  • L-Carnitine Impurity 1
  • (3-carboxy-2-hydroxypropyl)trimethyl-,hydroxide,innersalt,d-ammoniu
  • (+)-beta-Hydroxy-gamma-(trimethylammonio)butyrate
  • D(+)-Carnitine3-Hydroxy-4-(trimethylammonio)butanoate
  • 1-PropanaMiniuM,3-carboxy-2-hydroxy-N,N,N-triMethyl-, inner s
  • d-(3-carboxy-2-hydroxypropyl)trimethylammoniumhydroxide,innersalt
  • (2S)-3-Carboxy-2-hydroxy-N,N,N-triMethyl-1-propanaMiniuM Inner Salt

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
161.20 g/molcalc.
Exact mass
161.1052 Dacalc.
LogP (octanol/water)
-1.81calc.
Topological polar surface area
60.36 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
4calc.
Heavy atoms
11calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.86calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

D-Carnitine suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 4 suppliers
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Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

4 suppliers in 3 countries

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D-Carnitine price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Roles

  • animal metabolite
  • eukaryotic metabolite
  • human metabolite
  • mammalian metabolite
  • metabolite
  • mouse metabolite

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code D-Carnitine is traded under.

HS 2923.90Indicative HS code

Quaternary ammonium salts and hydroxides whether or not chemically defined not elsewhere classified…

World exports in 2024
$1.07B
+14.4% vs 2023, imports $1.16B
2019 to 2024
Top exporters
  1. China36.7%
  2. United States14.2%
  3. Netherlands9.4%
Top importers
  1. South Korea10.7%
  2. Germany10.1%
  3. United States9.9%
Reported customs values in USD, not prices.Full trade data

The HS code shown for D-Carnitine is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about D-Carnitine, based on the data on this page

What is D-Carnitine?

(S)-carnitine is the (S)-enantiomer of carnitine. It is a conjugate base of a (S)-carnitinium. It is an enantiomer of a (R)-carnitine.

What is the CAS number of D-Carnitine?

The CAS registry number of D-Carnitine is 541-14-0.

What is the molecular formula and weight of D-Carnitine?

The molecular formula of D-Carnitine is C7H15NO3 and its molar mass is 161.20 g/mol.

What is D-Carnitine used for?

Known uses and roles of D-Carnitine include animal metabolite, eukaryotic metabolite, human metabolite, mammalian metabolite, metabolite and 1 more.

Is D-Carnitine hazardous?

D-Carnitine carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of D-Carnitine?

D-Carnitine is usually classified under HS code 292390 (Quaternary ammonium salts and hydroxides, lecithins and other phosphoaminolipids…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy D-Carnitine?

CompoundList lists 4 suppliers of D-Carnitine in China, Canada and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of D-Carnitine?

Suppliers quote D-Carnitine on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle D-Carnitine

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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