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(+)-Usniacin

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(+)-Usniacin Basic information

Product Name:
(+)-Usniacin
CAS:
7562-61-0
MF:
C18H16O7
MW:
344.32
EINECS:
231-456-0
Mol File:
7562-61-0.mol
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(+)-Usniacin Chemical Properties

Melting point:
201-203 °C(lit.)
alpha 
488 º (c=0.4, CHCl3)
Boiling point:
399.43°C (rough estimate)
Density 
1.2869 (rough estimate)
refractive index 
1.4790 (estimate)
storage temp. 
2-8°C
pka
4.00±0.40(Predicted)
optical activity
[α]25/D +488°, c = 0.7% in chloroform
Water Solubility 
Partly soluble in water. Soluble in acetone, ethanol, chloroform and furfural.
Merck 
14,9893
BRN 
96698
CAS DataBase Reference
7562-61-0(CAS DataBase Reference)
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Safety Information

Hazard Codes 
Xn
Risk Statements 
22
Safety Statements 
36
WGK Germany 
3
RTECS 
HP5295050
3-10
HazardClass 
IRRITANT
HS Code 
29329990

MSDS

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(+)-Usniacin Usage And Synthesis

Uses

Usnic acid is used as fragrance; preservative in deodorants; in anti ac ne formulations; antibiotic for topical application.

Contact allergens

Usnic acid is a component of lichens, also used as a topical antibiotic. Allergic contact dermatitis from lichens occurs mainly occupationally in forestry and horticultural workers, and in lichen pickers.

Purification Methods

This very weak acid is the natural form which is recrystallised from Me2CO, MeOH or *C6H6. At 25o it is soluble in H2O (<0.01%), Me2CO (0.77%), EtOAc (0.88%), MeOCH2CH2OH (0.22%) and furfural (7.32%). [Curd & Robertson J Chem Soc 894 1937, Barton & Brunn J Chem Soc 603 1953, resolution: Dean et al. J Chem Soc 1250 1953, synthesis: Barton et al. J Chem Soc 538 1956, Beilstein 18/5 V 586.]

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(+)-UsniacinSupplierMore

Kono Chem Co.,Ltd Gold
Tel:
13289246953 29-86107037-8015
Email:
info@konochemical.com
Chembest Research Laboratories Limited
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021-20908456-
Email:
sales@BioChemBest.com
Alfa Aesar
Tel:
400-610-6006
Email:
saleschina@alfa-asia.com
TCI (Shanghai) Development Co., Ltd.
Tel:
021-67121386 / 800-988-0390
Email:
Sales-CN@TCIchemicals.com
Energy Chemical
Tel:
400-005-6266 021-58432009
Email:
sales8178@energy-chemical.com
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