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07039

Sigma-Aldrich

(R)-(+)-α-Lipoic acid

≥98.0% (HPLC)

Synonym(s):

(R)-(+)-1,2-Dithiolane-3-pentanoic acid, (R)-6,8-Dithiooctanoic acid, (R)-6,8-Thioctic acid

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About This Item

Empirical Formula (Hill Notation):
C8H14O2S2
CAS Number:
1200-22-2
Molecular Weight:
206.33
MDL number:
MFCD01631142
UNSPSC Code:
12352202
PubChem Substance ID:
329748332
NACRES:
NA.32

Quality Level

100
200

Assay

≥98.0% (HPLC)

optical purity

enantiomeric excess: ≥98.0% (HPLC)

mp

48-52 °C (lit.)

storage temp.

−20°C

SMILES string

OC(=O)CCCC[C@@H]1CCSS1

InChI

1S/C8H14O2S2/c9-8(10)4-2-1-3-7-5-6-11-12-7/h7H,1-6H2,(H,9,10)/t7-/m1/s1

InChI key

AGBQKNBQESQNJD-SSDOTTSWSA-N

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Biochem/physiol Actions

(R)-(+)-α-Lipoic acid was shown to significantly increase pyruvate oxidation while abrogating fatty acid oxidation in rat hepatocytes. These effects make R-(+)-α-Lipoic acid a promising treatment option for the treatment of Type II diabetes. It is a biological antioxidant with prooxidant activities, its therapeutic potential is widely investigated, e.g. in the treatment for Alzheimer′s disease.

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Analysis Note

identity confirmed by LC-MS

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Jennie L Walgren et al.
Metabolism: clinical and experimental, 53(2), 165-173 (2004-02-10)
R-(+)-alpha-lipoic acid (R-LA) is the naturally occurring enantiomer of LA. It is a strong antioxidant and cofactor of key metabolic enzyme complexes catalyzing the decarboxylation of alpha-keto acids. Racemic LA (rac-LA) has shown promise in treating diabetic polyneuropathy, and some
Dove J Keith et al.
Pharmacological research, 66(3), 199-206 (2012-05-23)
Lipoic acid (LA) shows promise as a beneficial micronutrient toward improving elder health. Studies using old rats show that (R)-α-LA (R-LA) significantly increases low molecular weight antioxidants that otherwise decline with age. Despite this rationale for benefiting human health, little
Takashi Yamada et al.
Neurochemistry international, 59(7), 1003-1009 (2011-10-13)
Growing evidence suggests that α-lipoic acid (LA) has neuroprotective effects in various pathological conditions including brain ischemia and neurodegeneration. While anti-oxidative activity has been thought to play a central role in LA-mediated neuroprotection, the precise mechanism and the effect of
Kate Petersen Shay et al.
Biochimica et biophysica acta, 1790(10), 1149-1160 (2009-08-12)
Alpha-lipoic acid (LA) has become a common ingredient in multivitamin formulas, anti-aging supplements, and even pet food. It is well-defined as a therapy for preventing diabetic polyneuropathies, and scavenges free radicals, chelates metals, and restores intracellular glutathione levels which otherwise
L Packer et al.
Free radical biology & medicine, 19(2), 227-250 (1995-08-01)
alpha-Lipoic acid, which plays an essential role in mitochondrial dehydrogenase reactions, has recently gained considerable attention as an antioxidant. Lipoate, or its reduced form, dihydrolipoate, reacts with reactive oxygen species such as superoxide radicals, hydroxyl radicals, hypochlorous acid, peroxyl radicals
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