Description

(-)-Usnic Acid CAS NO 6159-66-6 is a naturally occurring dibenzofuran derivative, recognized for its distinct biological activities. This compound is valued for its role as a benchmark standard in research and as a key ingredient in various formulations. It is primarily sought by the pharmaceutical, cosmetic, and life science research industries for its antimicrobial and biochemical properties.

Application

• Pharmaceutical Research: Used as a reference standard in analytical methods and as a lead compound in studies for antimicrobial, antiviral, and anti-inflammatory agents.
• Cosmetic & Personal Care: Incorporated into formulations for its preservative and antimicrobial properties, particularly in natural or botanical product lines.
• Life Science Studies: Serves as a critical biochemical tool in metabolic research, enzyme inhibition assays, and studies on lichen symbiosis.
• Agricultural Research: Investigated for its potential as a natural biocontrol agent or plant growth regulator in sustainable agriculture models.
• Material Science: Explored for its UV-absorbing characteristics in specialty coatings and polymer research.

Basic Information

Product Name	(-)-Usnic Acid
CAS No.	6159-66-6
Molecular Formula	C18H16O7
Molecular Weight	344.32 g/mol
Synonyms	(-)-Usnic Acid; L-Usnic Acid; (2,6-Diacetyl-7,9-dihydroxy-8,9b-dimethyl-1,3(2H,9bH)-dibenzofurandione); Usninic Acid; Usnein; Lichen Acid; NSC 37393; EINECS 228-182-3
EINECS	228-182-3

Quality Control

Our (-)-Usnic Acid is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets high-purity standards suitable for research and development. A detailed Certificate of Analysis (COA) is provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The product is light-sensitive and should be handled accordingly to maintain stability.

Specification

Item	Specification
Appearance	Yellow to pale yellow crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 98.0%
Melting Point	200 - 204 °C
Loss on Drying	≤ 1.0 %
Residue on Ignition	≤ 0.2 %
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.