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usnic acid

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Origin: China

Cas No: 125-46-2

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 80 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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Products Specification
Product Description

Quick Details
Type:
Herbal Extract
Form:
Powder
Variety:
Usnea Extract
Part:
Leaf
Extraction Type:
Solvent Extraction
Packaging:
DRUM, Plastic Container, Vacuum Packed
Place of Origin:
Shaanxi, China
Grade:
Food grade / Pharmaceutical Grade
Brand Name:
Faithful
Model Number:
Usnic Acid
Product Name:
Usnic Acid
Appearance:
Yellow crystalline powder
Shelf life:
2 Years
Test Method:
HPLC UV
Delivery time:
Within 2days
CAS No:
125-46-2
Molecular Formula:
C18H16O7
Melting point:
200°C
Boiling point:
399.43°C (rough estimate)
Molecular Weight:
344.32
Packaging&Delivery
Packaging Details
25kgs packaging Fiber drum outside and plastic bag inside 1-25kgs packaging aluminium bag outside and double plastic bag inside
Delivery Detail: within 2 days when get the payment
Shipping :
We have Professional shipping agent, based on customers ' demand for transport
By express :FEDEX,DHL,EMS ,UPS,TNT ect.
By SEA and By AIR
Port
Any port of China
Lead Time:
Quantity(Kilograms) 1 - 25 >25
Est. Time(days) 5 To be negotiated

Property

CAS No.: 125-46-2 Formula: C18H16O7 Molecular Weight: 344.31500

Description

Usnic acid is a naturally occurring dibenzofuran derivative found in several lichen species with the formula C18H16O7. It was first isolated by German scientist W. Knop in 1844 and first synthesized between 1933-1937 by Curd and Robertson. Usnic acid was identified in many genera of lichens including Usnea, Cladonia, Hypotrachyna, Lecanora, Ramalina, Evernia, Parmelia and Alectoria. Although it is generally believed that usnic acid is exclusively restricted to lichens, in a few unconfirmed isolated cases the compound was found in kombucha tea and non-lichenized ascomycetes.
At normal conditions, usnic acid is a bitter, yellow, solid substance. It is known to occur in nature in both the d- and l-forms as well as a racemic mixture. Salts of usnic acid are called usnates (e.g. copper usnate).

Basic Info

Chemical Name	usnic acid
Synonyms	Usnic Acid; 2,6-diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzofuran-1,3-dione;
CAS No.	125-46-2
Molecular Formula	C18H16O7
Molecular Weight	344.31500
PSA	117.97000
LogP	1.49980

Properties

Density	1.54g/cm3
Boiling Point	605.4ºC at 760 mmHg
Melting Point	201-203ºC
Flash Point	223.3ºC
Refractive Index	1.678
Storage Condition	2-8ºC
Vapor Pressure	3E-15mmHg at 25°C