5-[(3S)-二硫环戊-3-基]戊酸 (CAS No.1077-27-6)

Product Name:5-[(3S)-Dithiolan-3-yl]pentanoic acid

English Name:5-[(3S)-Dithiolan-3-yl]pentanoic acid

CAS No.:1077-27-6

Aliases:(S)-alpha-Lipoic acid, (S)-Lipoic acid, (-)-Lipoic acid, (3S)-1,2-Dithiolane-3-pentanoic acid

Molecular Formula:C8H14O2S2

Physical Properties:Pale yellow to yellow crystalline powder with a slight characteristic odor; molecular weight: 206.33; melting point: approx. 46-50 °C (single enantiomer); boiling point: approx. 362.5 °C at 760 mmHg (predicted); flash point: approx. 173.1 °C (predicted); relative density: approx. 1.22 g/cm³; freely soluble in ethanol, chloroform, benzene and ether, slightly soluble in water; specific optical rotation [α]D20 = -97° (c = 1, ethanol); store tightly sealed, protected from light, at low temperature.

Uses:As the (S)-enantiomer of alpha-lipoic acid, this product is mainly used as a chiral pharmaceutical intermediate and a biochemical research reagent. It is applied to investigate the stereoselective metabolism and pharmacological differences of lipoic acid enantiomers, and also serves as a reference standard for chiral HPLC analysis. It has research value in antioxidant applications in the pharmaceutical, food and cosmetics fields.

Technical Specifications:

Assay (HPLC): ≥98.0%

Appearance: pale yellow to yellow crystalline powder

Melting point: 46-50 °C

Specific optical rotation ([α]D20, c = 1, ethanol): -90° to -100°

Loss on drying: ≤0.5%