α-Lipoic Acid

Modify Date: 2024-01-02 12:17:48

α-Lipoic Acid Structure
α-Lipoic Acid structure
Common Name α-Lipoic Acid
CAS Number 1077-28-7 Molecular Weight 206.326
Density 1.2±0.1 g/cm3 Boiling Point 362.5±11.0 °C at 760 mmHg
Molecular Formula C8H14O2S2 Melting Point 60-62ºC
MSDS Chinese USA Flash Point 173.0±19.3 °C
Symbol GHS07
GHS07
Signal Word Warning

 Use of α-Lipoic Acid


α-Lipoic Acid is an antioxidant, which is an essential cofactor of mitochondrial enzyme complexes. α-Lipoic Acid inhibits NF-κB-dependent HIV-1 LTR activation.

 Names

Name DL-Thioctic Acid
Synonym More Synonyms

 α-Lipoic Acid Biological Activity

Description α-Lipoic Acid is an antioxidant, which is an essential cofactor of mitochondrial enzyme complexes. α-Lipoic Acid inhibits NF-κB-dependent HIV-1 LTR activation.
Related Catalog
Target

NF-κB

HIV

Mitochondrial bioenergetics

In Vitro The long terminal repeat (LTR) of HIV-1 is the target of cellular transcription factors such as NF-κB, and serves as the promoter-enhancer for the viral genome when integrated in host DNA[1]. α-Lipoic Acid (Alpha-Lipoic acid, ALA), a naturally occurring dithiol compound, plays an essential role in mitochondrial bioenergetics. α-Lipoic Acid reduces lipid accumulation in the liver by regulating the transcriptional factors SREBP-1, FoxO1, and Nrf2, and their downstream lipogenic targets via the activation of the SIRT1/LKB1/AMPK pathway. Treatment of cells with α-Lipoic Acid (250, 500 and 1000 μM) significantly increases the NAD+/NADH ratio in HepG2 cells (P<0.05 or P<0.01). Treatment with α-Lipoic Acid (50, 125, 250 and 500 μM) increases SIRT1 activity in HepG2 cells. α-Lipoic Acid (50, 125, 250, 500 and 1000 μM) increases phosphorylation of AMPK and acetyl-CoA carboxylase (ACC) in HepG2 cells in a dose-dependent fashion[1].
In Vivo C57BL/6J mice, divided into four groups, are fed an high-fat diet (HFD) for 24 weeks to induce nonalcoholic fatty liver disease (NAFLD) followed by daily administration of α-Lipoic Acid. Then, the effects of α-Lipoic Acid on hepatic lipid accumulation in long-term HFD-fed mice are assessed. Administration of α-Lipoic Acid (100 mg/kg or 200 mg/kg) markedly reduces visceral fat mass in mice. In addition, α-Lipoic Acid (100 mg/kg or 200 mg/kg) treatment inhibits the appetite and causes a dramatic weight loss (all P<0.05)[1].
Cell Assay The human hepatocellular carcinoma (HepG2) cell line is cultured in Dulbecco's modified Eagle's medium containing 10% fetal bovine serum at 37°C and 5% CO2. HepG2 cells are treated with AMPK inhibitor (CC, 20 μM, 0.5 h), SIRT1 inhibitor (NA, 10 mM, 12 or 24 h), and AMPK activator (AICAR, 2 mM, 1 h), Palmitate (PA, 125 μM, 12 h) and α-Lipoic Acid (250 μM, 6 or 12 h)[1].
Animal Admin Mice[1] Male C57BL/6J mice (6-week-old; body weight: 22-24 g) are allowed ad libitum access to normal diet and water for 2 weeks before dividing into four groups (n=8): normal diet (ND) (10% energy from fat), high-fat diet (HFD) (60% energy from fat) and HFD plus α-Lipoic Acid (100 mg/kg or 200 mg/kg). After 24 weeks of treatment, blood samples are collected after the eyeballs of the mice are extracted for serum preparation by centrifugation at 2000×g for 10 min at 4°C. The liver tissues are harvested in liquid nitrogen and stored at -80°C.
References

[1]. Xiao L, et al. Activity of the dietary antioxidant ergothioneine in a virus gene-based assay for inhibitors of HIV transcription. Biofactors. 2006;27(1-4):157-65.

[2]. Yang Y, et al. Alpha-lipoic acid improves high-fat diet-induced hepatic steatosis by modulating the transcription factors SREBP-1, FoxO1 and Nrf2 via the SIRT1/LKB1/AMPK pathway. J Nutr Biochem. 2014 Nov;25(11):1207-1217.

[3]. Lei D, et al. Synergistic neuroprotective effect of rasagiline and idebenone against retinal ischemia-reperfusion injury via the Lin28-let-7-Dicer pathway. Oncotarget. 2018 Jan 30;9(15):12137-12153.

 Chemical & Physical Properties

Density 1.2±0.1 g/cm3
Boiling Point 362.5±11.0 °C at 760 mmHg
Melting Point 60-62ºC
Molecular Formula C8H14O2S2
Molecular Weight 206.326
Flash Point 173.0±19.3 °C
Exact Mass 206.043518
PSA 87.90000
LogP 2.16
Vapour Pressure 0.0±1.7 mmHg at 25°C
Index of Refraction 1.562
Storage condition 2-8°C
Stability Stable. Incompatible with strong oxidizing agents.
Water Solubility ethanol: 50 mg/mL | 0.9 g/L (20 ºC)

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
JP1192000
CHEMICAL NAME :
1,2-Dithiolane-3-valeric acid, (+-)-
CAS REGISTRY NUMBER :
1077-28-7
BEILSTEIN REFERENCE NO. :
0081853
LAST UPDATED :
199612
DATA ITEMS CITED :
1
MOLECULAR FORMULA :
C8-H14-O2-S2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
235 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
ARZNAD Arzneimittel-Forschung. Drug Research. (Editio Cantor Verlag, Postfach 1255, W-7960 Aulendorf, Fed. Rep. Ger.) V.1- 1951- Volume(issue)/page/year: 21,284,1971

 Safety Information

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H302
Precautionary Statements P301 + P312 + P330
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes Xn: Harmful;
Risk Phrases R22
Safety Phrases 37/39-26-24/25-36
RIDADR NONH for all modes of transport
WGK Germany 3
RTECS JP1192000
HS Code 2934999090

 Synthetic Route

 Customs

HS Code 2934999090
Summary 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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 Synonyms

(S)-5-(1,2-Dithiolan-3-yl)pentanoic acid
Thioctic acid
5-[(3S)-Dithiolan-3-yl]pentanoic acid
(S)-6,8-Thioctic acid (S)-1,2-Dithiolane-3-pentanoic acid
DL-Thioctic acid
5-(1,2-Dithiolan-3-yl)pentanoic acid
DL-α-Lipoic acid
(±)-α-Lipoic acid
5-(dithiolan-3-yl)pentanoic acid
6,8-Dithiooctanoic acid
MFCD00005474
1,2-Dithiolane-3-pentanoic acid
(±)-1,2-Dithiolane-3-pentanoic acid
(±)-1,2-Dithiolane-3-valeric acid
6,8-Dihydrothioctic acid
lipoic acid
UNII:73Y7P0K73Y
DL-6,8-Thioctic acid
EINECS 214-071-2
α-Lipoic Acid
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