ethyl acetate造句
31. The ethanol extract from the twig bark powder of Periploca sepium was suspended in water and successively treated with petroleum ether, ethyl acetate and n-butanol.
32. Fructus Mume was identified with ethyl acetate - formyl acid-water(14:7:7) as developing agent in silica gel G, and using 0.1% of bromocresol green as the visualization reagent.
33. A capillary gas chromatographic method with directly sampling was established to determination the residual amount of methanol, ethanol and ethyl acetate in lansoprazole.
34. Soluble in ethanol, ethyl acetate, ethyl ether, most organic solvents such as acetone, slightly soluble in water and glycol.
35. Solubility: insoluble in water, benzene, toluene, soluble in ethanol, acetone, ethyl acetate.
36. RESULTS The antioxdant components were found in the ethyl acetate extract from stem of this plant.
37. Methods: (1)To separate stilbene glycoside by using silica gel column chromatography with gradient elution consisting of ethyl acetate and petroleum ether.
38. Ten of them were identified. They are ethylene, propylene, isobutane, cyclobutane, three isomeric butenes, methyl ethyl ether, ethyl isopropyl ether, and ethyl acetate.
39. ConclusionThere is good cytotoxicity of the ethyl acetate and acetone extracts from Alocasia macrorrhiza to tumor cells, and no obvious acute toxicity has been observed.
40. Four extracts of petroleum ether, ethyl acetate, n-butanol and water were obtained from the methanol extract of the root bark in Periploca sepeium.
41. Current capacity: Glacial acetic acid 600 k ton, Ethyl acetate ton.
42. Objective:To investigate the effects of the ethyl acetate extract of Semen Hoveniae capsule on liver microsomal cytochrome P450 system in rats.
43. Give priority to with ethyl acetate, certain acetic ester aroma of services.
44. Results The average recovery of Dracaena major components reached 80% after precipitated by acetonitrile first and then extracted by ethyl acetate.
45. Ethyl acetate ( 71 . 41 b ) was added to the slurry in the vessel.
46. Finally,[http:///ethyl acetate.html] the structure of lactide was characterized and the solvent effects on the recrystallization were compared between ethyl acetate and acetone.
47. Determination of rate constant of ethyl acetate saponification reaction using the conductivity method is an important experiment of physical and chemical dynamics.
48. Solvents of dissolution PS plastic foam are mix solvents of dimethylbenzene, ethyl acetate and n - butyl alcohol.
49. Ethyl acetate content and ethyl caproate content in the liquor were evidently high(The two substance showed parallel quantity relative ratio relation).
50. The extractions of pericarp of Yongchun citrus by alcohol, aether and ethyl acetate was studied.
51. Results Those samples ingredients easy to volatilize were mainly toluene, butanone, gasoline, ethyl acetate, acetone, etc. All of them were rated as low toxic for their acute toxicity.
52. AIM To investigate the therapeutic effect of ethyl acetate extract from Pongamia pinnata roots (PREA) on ethanol-induced gastric lesions.
53. The antioxidant of Terminalia chebula Rotz are distilled by the ultrasonic extraction method with acetone, ethyl acetate and 85% ethanol.
54. Objective: To estimate the anti-hepatitis of the Ethyl Acetate extract of Swertia punicea Hemsl.
55. Solvents of dissolution PS plastic foam are mix solvents of dimethylbenzene, ethyl acetate and butyl alcohol.
56. METHODS : Evodiamine and rutaecarpine were extracted with the solvent ethyl acetate and the ultrasonic extractor.
57. Objective To investigate the hypoglycemic activity of the ethyl acetate extract from Bidens bipinnata L.
58. Methods: HPCE analysis was carried out on the ethyl acetate extracts of 18 Selaginella plants (from 11 species), using MECC separation model.
59. In benzene or ethyl acetate solution rates increase linearly with methyl methacrylate concentration.
60. The ethyl acetate and n-butanol extraction were chromatographed on silica gel column, polyamide column, sephadex LH-20 column and preparing TLC, respectively.
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