(+)-Usniacin
- 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
- pka4.00±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 Reference7562-61-0(CAS DataBase Reference)
- Language:EnglishProvider:SigmaAldrich
(+)-Usniacin Usage And Synthesis
- UsesUsnic acid is used as fragrance; preservative in deodorants; in anti ac ne formulations; antibiotic for topical application.
- Contact allergensUsnic 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 MethodsThis 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.]
- 2,6-DIMETHYLANISOLE 5-ETHYL-2-HYDROXY-BENZALDEHYDE 5'-ETHYL-2'-HYDROXYACETOPHENONE Ascoric Acid Dimethyl fumarate 4,4'-Diacetylbiphenyl Dimethyl ether Glycine 2,6-Diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzofuran-1,3(2H,9bH)-dione monosodium salt Citric acid (+)-Usniacin Dimethyl phthalate Dimethyl sebacate Dimethyl sulfoxide Ethyl 2-(Chlorosulfonyl)acetate N,N-Dimethylformamide 2,3-Butanedione N-ACETYL-L-TYROSINE ETHYL ESTER
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