LevatinCAS# 140670-84-4 |
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| Cas No. | 140670-84-4 | SDF | Download SDF |
| PubChem ID | 5459226 | Appearance | Cryst. |
| Formula | C19H20O5 | M.Wt | 328.36 |
| Type of Compound | Diterpenoids | Storage | Desiccate at -20°C |
| Solubility | Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc. | ||
| SMILES | C=C1CCC23CC(CCC2C14CC(OC4=O)C5=COC=C5)OC3=O | ||
| Standard InChIKey | UNKJMPBJRRFBEL-MMMABECUSA-N | ||
| Standard InChI | InChI=1S/C19H20O5/c1-11-4-6-18-8-13(23-16(18)20)2-3-15(18)19(11)9-14(24-17(19)21)12-5-7-22-10-12/h5,7,10,13-15H,1-4,6,8-9H2/t13?,14-,15-,18?,19+/m0/s1 | ||
| 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. We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months. Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it. |
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| About Packaging | 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial. 2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial. 3. Try to avoid loss or contamination during the experiment. |
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| Shipping Condition | Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request. | ||
The herbs of Croton caudatus Geisel.var.tomentosus Hook
| Structure Identification | Journal of Natural Products, 1992, 55(4):445-449.Levatin, an 18-Norclerodane Diterpene from Croton levatii.[Reference: WebLink]
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Levatin Dilution Calculator
Levatin Molarity Calculator
| 1 mg | 5 mg | 10 mg | 20 mg | 25 mg | |
| 1 mM | 3.0454 mL | 15.2272 mL | 30.4544 mL | 60.9088 mL | 76.1359 mL |
| 5 mM | 0.6091 mL | 3.0454 mL | 6.0909 mL | 12.1818 mL | 15.2272 mL |
| 10 mM | 0.3045 mL | 1.5227 mL | 3.0454 mL | 6.0909 mL | 7.6136 mL |
| 50 mM | 0.0609 mL | 0.3045 mL | 0.6091 mL | 1.2182 mL | 1.5227 mL |
| 100 mM | 0.0305 mL | 0.1523 mL | 0.3045 mL | 0.6091 mL | 0.7614 mL |
| * Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations. | |||||
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Pupillography of a relative afferent pupillary defect.[Pubmed:3953726]
Am J Ophthalmol. 1986 Mar 15;101(3):320-4.
The pupillary reactions during the alternating light test of Levatin consist of bilateral pupillary constriction followed by redilatation each time the light moves from one eye to the other. The pupils constrict less and redilate more in an eye with an optic nerve lesion than in the unaffected fellow eye. The amplitude of pupillary responses and the average pupil size decrease when the light is alternated more rapidly. Placing neutral density filters over the better eye has the effect of decreasing the amplitude of pupillary responses when that eye is stimulated while increasing responses of the diseased eye. Because of contraction anisocoria and physiologic anisocoria, the most reliable pupillographic and clinical criterion for diagnosing a relative afferent pupillary defect using the alternating light test is an initial pupillary constriction in the suspected eye that is smaller with direct than with consensual stimulation.
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