
(+)-UsniacinNaturally occurring dibenzofuran derivative |
Sample solution is provided at 25 µL, 10mM.
































Quality Control & MSDS
- View current batch:
- Purity = 99.54%
- COA (Certificate Of Analysis)
- HPLC
- NMR (Nuclear Magnetic Resonance)
- MSDS (Material Safety Data Sheet)
- Datasheet
Chemical structure

Description | (+)-Usniacin is a naturally occurring dibenzofuran derivative | |||||
Targets | ||||||
IC50 |

(+)-Usniacin Dilution Calculator
calculate

(+)-Usniacin Molarity Calculator
calculate
Cas No. | 7562-61-0 | SDF | Download SDF |
Canonical SMILES | CC1=C(C(=C2C(=C1O)C3(C(=CC(=C(C3=O)C(=O)C)O)O2)C)C(=O)C)O | ||
Formula | C18H16O7 | M.Wt | 344.32 |
Solubility | ≥8.0mg/mL in DMSO with gentle warming | Storage | Store at -20°C |
Physical Appearance | A solid | Shipping Condition | Evaluation sample solution : ship with blue ice.All other available size:ship with RT , or blue ice upon request |
General tips | For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months. |
MIC: 0.05 μg/62.5 μl to 3.1 μg/62.5 μl
Microorganisms can colonize a wide variety of medical devices, putting patients at risk for systemic and local infectious complications, including local-site infections, endocarditis, and catheter-related bloodstream infections. (+)-Usniacin is a secondary lichen metabolite that possesses antimicrobial activity against various planktonic gram-positive bacteria.
In vitro: (+)-Usniacin showed antimicrobial activity against the same microorganisms as that of acetone extract. Among the three analogues it was the most active one having quite low MIC values. Furthermore, (+)-Usniacin did not show any activity against A. hydrophila and B. cereus whereas (D)-usnic acid did. On the other hand, (+)-Usniacin was active against Y. enterocolitica whereas (D)-usnic acid was not active [1].
In vivo: No animal in-vivo study has been reproted so far.
Clinical trials: Trials carried out in volunteers showed that mouth-rinse with (+)-Usniacin preparations exerted a selective and long lasting action against S. mutans. The adherence of S. mutans to smooth surfaces was not increased by the presence of subinhibiting concentrations of (+)-Usniacin. These characteristics make (+)-Usniacin a suitable candidate for topical use in oral medicine [2].
References:[1] Tay T, Türk AO, Yilmaz M, Türk H, Kivanç M. Evaluation of the antimicrobial activity of the acetone extract of the lichen Ramalina farinacea and its (+)-usnic acid, norstictic acid, and protocetraric acid constituents. Z Naturforsch C. 2004 May-Jun;59(5-6):384-8.[2] Ghione M, Parrello D, Grasso L. Usnic acid revisited, its activity on oral flora. Chemioterapia. 1988 Oct;7(5):302-5.
ebiomall.com






>
>
>
>
>
>
>
>
>
>
>
>
二、限制性内切酶消化样品DNA
三、凝胶电泳分离消化产物
四、如果靶序列>5kb,在0.25M的HCl中进行震荡脱嘌呤10min,ddH2O洗一次
五、用变性液震荡处理30min,ddH2O洗一次
六、中和液震荡处理30min
七、裁取合适大小的尼龙膜或硝酸纤维素膜进行转膜操作,可用真空转膜仪或者搭滤纸桥,需要20×SSC
八、制备探针,可用地高辛标记(以地高辛为例)
九、将膜放入杂交瓶,42°C预杂交30min
十、倒掉预杂交液,加入杂交液,适当的温度进行杂交4h至过夜
十一、洗膜,先用2×SSC+0.1%SDS,20-25°C洗2×5min,再用0.5×SSC+0.1%SDS洗2×15min。然后用washing buffer洗1-5min,接着用blocking solution洗30min后,用antibody solution洗30min,再用washing buffer洗2×15min,再用detection buffer洗2-5min后,取出膜,放于保鲜膜上,在结合有DNA的一面滴加CSPD ready-to-use后,立刻盖上保鲜膜,让CSPD ready-to-use均匀的布满膜表面,室温放置5min后,37°C温育10min以上
十二、放射自显影,可用成像系统信号累积模式显影或用X-ray显影

