Merck
CN
All Photos(2)

04471

Supelco

(R)-(+)-α-Lipoic acid

analytical standard

Synonym(s):
(R)-(+)-1,2-Dithiolane-3-pentanoic acid, (R)-6,8-Dithiooctanoic acid, (R)-6,8-Thioctic acid
Empirical Formula (Hill Notation):
C8H14O2S2
CAS Number:
Molecular Weight:
206.33
MDL number:
PubChem Substance ID:
NACRES:
NA.24

grade

analytical standard

Quality Level

assay

≥98.0% (HPLC)

optical activity

[α]/D +115±5°, c = 1% in ethanol

shelf life

limited shelf life, expiry date on the label

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

mp

48-52 °C (lit.)

application(s)

cleaning products
cosmetics
food and beverages
personal care

format

neat

storage temp.

2-8°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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General description

α-Lipoic acid is an antioxidant which is generally present in plants, animals and many other microorganisms.

Application

α-Lipoic acid has been used as a reference standard for the analysis of α-lipoic acid in human plasma by high performance liquid chromatography coupled to electron capture detector (HPLC-ECD), in various food matrices and dietary supplements by HPLC combined with coulometric electrode array detector (CEAD) as well as electrospray ionization mass spectrometer (ESI-MS).
It may be used as a reference standard for the determination of α-lipoic acid in human urine by isocratic reversed-phase HPLC and in α-lipoic acid capsules by HPLC with chemiluminescence detection.

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Origin

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