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Merck

T1395

(±)-α-Lipoic acid

BioReagent, suitable for cell culture, ≥99%

Synonym(s):

Thioctic acid, (±)-1,2-Dithiolane-3-pentanoic acid, 6,8-Dithiooctanoic acid, DL-α-Lipoic acid, DL-6,8-Thioctic acid, Lip(S2)

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1 G
$125.00
5 G
$322.00

$125.00


Estimated to ship on17 November 2025Details


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About This Item

Empirical Formula (Hill Notation):
C8H14O2S2
CAS Number:
Molecular Weight:
206.33
Beilstein:
81853
EC Number:
MDL number:
UNSPSC Code:
12352207
PubChem Substance ID:
NACRES:
NA.71

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product line

BioReagent

Quality Level

Assay

≥99%

technique(s)

cell culture | mammalian: suitable

solubility

ethanol: 50 mg/mL

SMILES string

OC(=O)CCCCC1CCSS1

InChI

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

InChI key

AGBQKNBQESQNJD-UHFFFAOYSA-N

Gene Information

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General description

α-Lipoic acid (LA), a nutritional component found in vegetables and meat, has both antioxidant and oxidant properties. LA exerts therapeutic potential to many diseases like liver cirrhosis, heavy metal poisoning, and diabetic polyneuropathy. LA exerts apoptotic potential in cancer cells either by oxidative stress related pathway or by activation of caspases.[1] LA improves mitochondrial function and plays a key role in mitochondrial energy metabolism.[2]

Application

Lipoic acid has been used:
  • for induction of eryptosis in erythrocytes[1]
  • as a constituent in NS21 media for neuronal cultures[3]
  • to evaluate its effect on liver energy metabolism by high performance liquid chromatography (HPLC) and assessing mitochondrial function by mitochondrial gene expression studies in lipopolysaccharide (LPS) pre-treated mice[2]
  • to elucidate its effect on paraquat poisoning in lungs[4]

Biochem/physiol Actions

Antioxidant and coenzyme needed for the activity of enzyme complexes such as pyruvate dehydrogenase and glycine decarboxylase.
Antioxidant and coenzyme needed for the activity of enzyme complexes such as those of pyruvate dehydrogenase and glycine decarboxylase. Exogenous thioctic acid is reduced intracellularly by two or more enzymes. The reduced form then influences a number of cell processes by direct radical scavenging, recycling of other antioxidants, increasing glutathione synthesis, and modulating transcription factor activity particularly that of NF-κB. Decreases the phagocytosis of myelin by macrophages.

Other Notes

Oxidized form

Pictograms

Exclamation markEnvironment

Signal Word

Warning

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number

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Stimulation of suicidal erythrocyte death by alpha-lipoic acid
Bhavsar SK, et al.
Cellular Physiology and Biochemistry, 26(6), 859-868 (2010)
alpha-Lipoic acid attenuates LPS-induced liver injury by improving mitochondrial function in association with GR mitochondrial DNA occupancy
Liu Z, et al.
Biochimie, 116, 52-60 (2015)
Effect of SP-A/B in lipoic acid on acute paraquat poisoning
Li SP, et al.
World journal of emergency medicine, 5(1), 57-62 (2014)
Yucui Chen et al.
Journal of neuroscience methods, 171(2), 239-247 (2008-05-13)
In vitro culturing of primary neurons is a mainstay of neurobiological research. Many of these culture paradigms have taken advantage of defined culture media rather than serum additives that contain undefined survival factors to facilitate experimental manipulations and interpretation of
Michela Rosini et al.
European journal of medicinal chemistry, 46(11), 5435-5442 (2011-09-20)
Lipoic acid (LA) is a natural antioxidant. Its structure was previously combined with that of the acetylcholinesterase inhibitor tacrine to give lipocrine (1), a lead compound multitargeted against Alzheimer's disease (AD). Herein, we further explore LA as a privileged structure

Articles

氧化应激,在一部分上,是由多种细胞过程产生的活性氧介导,并由诸如酶清除剂或抗氧化剂调节剂等细胞抗氧化剂机制所控制的。自由基,如活性氧,会通过细胞引起细胞损伤。

How lipoic acid (thioctic acid) and other cell culture components affect the performance of serum-free, protein-free cell culture systems used for biomanufacturing heterologous proteins including monoclonal antibodies.

抗氧化剂可保护生物系统免受含氧自由基和氧化还原过渡金属离子(如铁、铜和镉)引起的氧化损伤。

Antioxidants protect biological systems from oxidative damage produced by oxygen-containing free radicals and from redoxactive transition metal ions such as iron, copper, and cadmium.

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Questions

1–3 of 3 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  3. Hi, my lab wanted to verify if the T1395-1G was a racemic mixture of Lipoic Acid. If it is racemic, is it 50/50 of both enantiomers?

    1 answer
    1. Yes, Product T1395 is racemic but no test on D and L ratio as per its Certificate of Analysis. Generally, it should be close to 50/50.

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