O-Acetyl-L-carnitine hydrochloride

≥99% (titration), powder

ALC, Acetyl L-carnitine HCl, ALCAR, R-(−)-2-Acetyloxy-3-carboxy-N,N,N-trimethyl-1-propanaminium chloride, (R)-3-Acetoxy-4-(trimethylammonio)butyrate hydrochloride
Empirical Formula (Hill Notation):
C9H17NO4 · HCl
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
MDL number:
PubChem Substance ID:

Quality Level

biological source



≥99% (titration)



optical activity

[α]25/D −28°, c = 2 in H2O(lit.)


cell analysis: suitable


white to off-white


194 °C


H2O: 100 mg/mL

storage temp.


SMILES string




InChI key


Looking for similar products? Visit Product Comparison Guide

Related Categories

General description

Acetyl-L-carnitine (ALC/ALCAR), a quasi-vitamin is a metabolite of carnitine, present in mammalian plasma and tissues. It is the acetylated form of L-carnitine (LC). ALCAR is used as a dietary supplement. It is present at high level in the hypothalamus.


O-Acetyl-L-carnitine hydrochloride has been used:
  • as a bioactive compound to study its effect on the proliferation of B-lymphoblastoid cell lines (BLCL) and its immune modulating properties on influenza virus specific human B and T cell responses in vitro
  • as in vitro maturation (IVM) media component to study its effects on lamb oocyte blastocyst rate, ultrastructure and mitochondrial DNA copy number
  • as a metabolite/chemical standard to quantify the metabolite levels in murine tumor interstitial fluid


1, 5 g in poly bottle

Biochem/physiol Actions

Acetyl L-carnitine (ALC) plays a vital role in intermediary metabolism and in improving female fertility. The oxidative and metabolic status of the female reproductive system is controlled by ALC. ALC possesses cholinomimetic and anti-inflammatory effects. It controls γ-amino butyric acid (GABA) system. ALC is capable of modifying the rate of glucose usage in the brain. It also possesses a neuroprotective role in the developing brain.
Endogenous mitochondrial metabolite that transports acetyl groups across the mitochondrial membrane. Exogenous acetylcarnitine enhances mitochondrial function in aged rats. As an acetate donor to coenzyme A, it increases the central and peripheral acetylcholine synthesis and function. Acetylcarnitine has antinociceptive activity that may be mediated by enhanced activity of muscarinic cholinergic receptors or mGlu2 glutamate receptors.


Exclamation mark

Signal Word


Hazard Statements

Precautionary Statements

Target Organs

Respiratory system

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Rosa Palmeri et al.
Foods (Basel, Switzerland), 9(2) (2020-02-27)
Consumer interest toward natural ingredients is creating a growing trend in the food industry and research for the development of natural products such as colorants, antimicrobials and antioxidants. Semi-processed frozen prickly pear (Opuntia ficus-indica (L.) Mill.) juices (PPJs), obtained from...
Abbi D Lane-Cordova et al.
PloS one, 12(10), e0186495-e0186495 (2017-10-20)
Having experienced 2-3 births is associated with reduced mortality versus women with <2 or ≥4 births. The effect of 2-3 births on lifespan may be associated with delayed cellular aging. We hypothesized telomere length, a marker of cellular aging, would...
Kifayatullah Shah et al.
Drug delivery, 24(1), 1631-1647 (2017-10-25)
The study investigated aerosolization, pulmonary inhalation, intracellular trafficking potential in macrophages and pharmacokinetics profiles of rifampicin-oleic acid first-generation nanoemulsion and its respective chitosan- and chitosan-folate conjugate-decorated second and third-generation nanoemulsions, delivered via nebulization technique. The nanoemulsions were prepared by conjugate...
Rita Celano et al.
Journal of agricultural and food chemistry, 67(31), 8689-8699 (2019-07-13)
The contamination of honey with hepatotoxic pyrrolizidine alkaloids (PAs) is an actual concern for food safety. This study reports the first application of dispersive liquid-liquid microextraction (DLLME) in the determination of five relevant PAs, and the relative N-oxide derivatives (PANOs)...
Role of L-carnitine in female infertility
Agarwal A, et al.
Reproductive Biology and Endocrinology, 16 (2018)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service

Social Media

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon


Research. Development. Production.

We are a leading supplier to the global Life Science industry with solutions and services for research, biotechnology development and production, and pharmaceutical drug therapy development and production.

© 2021 Merck KGaA, Darmstadt, Germany and/or its affiliates. All Rights Reserved.

Reproduction of any materials from the site is strictly forbidden without permission.