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USNIC ACID
USNIC ACID CAS:125-46-2
| USNIC ACID Chemical Properties | |
| Melting point | 200°C |
| alpha | D16 +509.4° (c = 0.697 in chloroform) |
| Boiling point | 399.43°C (rough estimate) |
| density | 1.2869 (rough estimate) |
| refractive index | 495 ° (C=0.7, CHCl3) |
| storage temp. | Inert atmosphere,2-8°C |
| pKa | 4.00±0.40(Predicted) |
| Merck | 9893 |
| CAS DataBase Reference | 125-46-2(CAS DataBase Reference) |
| EPA Substance Registry System | Usnic acid (125-46-2) |
| USNIC ACID Usage And Synthesis | |
| Chemical Properties | Crystalline, yellow solid. Insoluble in water; slightly soluble in alcohol and ether. |
| Uses | antibacterial |
| Uses | Usnic acid is a major metabolite from a number of lichen and fungal species and is perhaps one of the longest known microbial metabolites, first isolated in 1844. Usnic acid exhibits a broad range of biological activity, indeed it is easier to list the bioassays in which it does not exhibit activity. More often than not, potency is low and of limited value. Usnic acid is an important metabolite for dereplication in discovery research programs. |
| Definition | ChEBI: A member of the class of dibenzofurans that is dibenzo[b,d]furan-1(9bH)-one substituted by acetyl groups at positions 2 and 6, hydroxy groups at positions 3 and 7 and methyl groups at positions 8 and 9b. |
| 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.] |
USNIC ACID CAS:125-46-2
FAQ:
1.What is about your company strength?
Since 2005, we have more than 15 years experience in chemical industry.
We can manufacture 3000+ kinds of water treatment chemicals, reagents&dyes.
2.What is the MOQ of your product?
We can supply any quantity you need for the first time for samples or trial orders,
so pls just tell us the real quantity you need.
3.How could we know whether your quality could meet our requirements or not?
If you could provide us your spec., our technician will check whether our quality could
meet your requirements or customize it for you. We could also provide our TDS,MSDS.
etc for your check. And the third party inspection is acceptable.At last, we could recommend
you some of our customers who use the same chemicals.
4.Can we get free samples before orders?
According to different values of our products, the samples could be for free,but it is not for all.
5.Could we use our DHL/FEDEX/TNT ACCOUNT to ship the samples?
We are sorry to tell you that we can just use our professional shipping forwarders to ship goods of small quantities.
Because chemical products belong to special cargos, no matter it is dangerous chemical or not.
6.What payment terms are acceptable?
T/T, L/C, etc.
7.How long is your delivery time?
The goods of small quantity will be sent out in 3 working days. For bulk cargo,
we will book the cargo space once the order is confirmed.
8.How many countries you already exported?
Our products have been widely used in more than 120 countries, mainly from the United States, Canada, the United Kingdom,
Russia, Australia, Japan, South Korea, Thailand, Singapore, Vietnam, Indonesia, Malaysia, the Philippines, Brazil, South Africa,
Ukraine, New Zealand,the Netherlands, UAE, Iran, Saudi Arabia and other countries.
9.What’s your supported standard of products?
The product standards we can supply include corporate standards, Chinese Pharmacopoeia (CP), British Pharmacopoeia (BP),
European Pharmacopoeia (EP), United States Pharmacopoeia (USP), Japanese Pharmacopoeia (JP), etc.
We can also provide customized product standards required by customers.
10.What’s your incoterm?
All stock packaging meets export standards, and it only takes 5-7 working days to have inventory, if remanufactured,
delivery will take 15-21 days.
11.What’s your policy with dealers and wholesalers?
We are very welcome to cooperate with distributors and wholesalers, and will provide them with better price advantages,
professional product knowledge,comprehensive product information and after-sales service.
