糠酸
- furoic acid;pyromucic acid;furancarboxylic acid
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升华温度105~115℃.并且进一步研究了糠酸及其晶体的制备方法、晶体的构象(通过分子力学计算方法)及其热稳定性(通过热重分析法TGA和差热分析法DTA)。
And its configuration , by the method of molecular mechanics and the thermostability by TGA and DTA of the crystal of furoic acid were discussed .
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通过测试糠醛氧化后生成的糠酸的含量和树脂状氧化物的含量,对抗氧化性能进行了比较。
Inoxidizability has been studied by testing the content of the furoic acid and furfural resinous oxide generated from the oxidized furfural .
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对照组用糠酸莫美松软膏和尿素软膏外涂,bid,共治疗4周。
The control group , with mometasone furoate plus 10 % urea ointment , bid , the course of treatment all lasting 4 weeks .
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从糠醛出发,由制备的糠酸和甲醇反应,在盐酸催化下,合成了香料糠酸甲酯,并用IR、1HNMR、GC等进行了表征;
Using hydrochloric acid as a cheap catalyst , perfume methyl furoate was synthesized from methanol and furoic acid prepared from furfural , and was characterized by GC , IR and 1H-NMR .
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以固体超强酸SO4~(2-)/ZrO2-Al2O3为催化剂合成糠酸酯类香料。
Furoates were synthesized by solid superacid SO_4 ~ ( 2 - ) / ZrO_2 - Al2_ O_3 . The optimum conditions of the preparation of catalyst by orthogonal experiments were studied .
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本文对糠酸甲酯、糠酸丙酯糠、糠酸丁酯、糠酸戊酯的合成进行了研究,并通过IR、~1H-NMR、GC等分析方法证实了它们的结构。
The synthesis of methyl , propyl , butyl , and pentyl ester of furoic acid have been studied in this paper . The structures have been confirmed by IR , ~ 1HNMR , and GC .
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以糠醛为起始原料,通过康尼查罗反应、酰氯化和酯化反应合成了糠酸甲酯,实验结果表明:酯化反应时间2.5h,糠酸甲酯收率可达85.0%。
Methyl-furoate is synthesized from furfural by Cannizzaro reaction , acyl chloride reaction and esterification . It showed that the time of esterification is only 2.5 hours and the yield can reach 85.0 % .
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目的研究职业性苯暴露反-反式粘糠酸(t,t-MA)生物接触限值。
Objective To study the biological limit of urine trans , trans-muconic acid ( t , t-MA ) for occupational exposure to benzene .
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钙泊三醇软膏与糠酸莫米松乳膏联合治疗银屑病的临床研究
Treatment of psoriasis with calcipotriol ointment in combination with mometasone cream
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糠酸和糠醇酯类香料的研究
Study on the ester flavorings of furoic acid and furfuryl alcohol
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糠酸阳离子交换树脂的半导体性能研究
The studies of semiconductivity of cation exchange resin of furoic acid
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超声聚焦联合糠酸莫米松治疗变应性鼻炎的效果
Combination of ultrasound focusing and mometasone furoate for allergic rhinitis
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糠酸莫米松药理学特性与治疗皮肤病临床疗效
The pharmacology and clinical efficacy of mometasone furoate in treatment of dermatological disorders
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新的糠酸工业合成法的研究
Study of the new industral preparation of pyromucic acid
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0.1%糠酸莫米松乳膏治疗皮炎湿疹临床疗效观察
Therapeutic Efficacy of Compound Eloson in Eczema and Dermatitis
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铁(Ⅱ)/衣糠酸催化体系应用于原子转移自由基聚合反应的研究
Study of Atom Transfer Radical Polymerization Mediated by Iron ~ⅱ Chloride / Itaconic Acid
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扭辫法对糠酸聚合反应机理的研究
Studies on the reaction mechanism of polymerization of 2-FUROIC acid by torsional braid analysis
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糠酸乙酯合成的初步研究
Preliminary study on synthesis of ethyl furoate
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糠酸酯类香料合成的研究
The study of the synthesis of furoate
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在糠醛润滑油精制装置中,糠酸是主要腐蚀源。
Furfural oxidation results furoic acid which is the main corrodent in lube furfural refining unit .
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糠酸莫米松联合孟鲁司特治疗小儿变应性鼻炎的疗效观察
Clinical Efficacy of Mometasone Furoate Nasal Spray Combined with Oral Montelukast in Treatment of Allergic Rhinitis in Children
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同时也是呋喃、顺酐、糠酸等重要有机原料,在石油炼制、造纸工业等部门有着广泛的用途。
Tetrahydrofuran is used as a commercial solvent and is converted in starting materials for the preparation of nylon .
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本文介绍了衣糠酸的性质、生产工艺、应用及市场前景。
The properties , production process , applications and market prospects of itaconic acid have been described in this paper .
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随机试验比较布地奈德和糠酸莫米松鼻喷雾剂对常年性变应性鼻炎患者的鼻气道峰流速和鼻炎症状的作用。
A comparison of once-daily triamcinolone acetonide aqueous and twice-daily beclomethasone dipropionate aqueous nasal sprays in the treatment of seasonal allergic rhinitis .
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结果表明,在浓硫酸存在下,随着温度的升高,糠酸的聚合反应历程为分段的逐步聚合过程;
The results indicate that the mechanism of polymerization of furoic acid is a stepwise polymerization process , as the temperature was raised .
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结论0.1%糠酸莫米松乳膏治疗湿疹、神经性皮炎使用方便,安全性好。
Conclusions These results suggest that 0.1 % mometasone furoate cream is an effective and safe drug in the treatment of neurodermatitis and eczema .
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受试者分别接受国产糠酸莫米松乳膏和艾洛松治疗。患者每日局部涂药1次,连续用药4周。
The home made mometasone furoate cream or imported Eloson cream was topically used in patients with such dermatoses once daily for 4 weeks , respectively .
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糠酸含量较高,说明糠醛氧化现象比较严重。(2)水分分析采用气相色谱法,水分含量较少,分析结果重现性比较好。
Content of furfural acid is high , which illustrates that furfural solvent is high oxidised . ( 2 ) Gas chromatography is for water content detection .
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但苯巯基尿酸的测定对仪器要求较高,而反反式粘糠酸检测方法更易被基层接受、普及。
But the detection of S-PMA requires high standards of instrument , while the method of detection of trans , trans-muconic acid is likely to be wide-spread accepted by those poor-equipped departments .
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润滑油糠醛精制是提高润滑油质量的重要途径,但是糠醛易于氧化生成糠酸和树脂状氧化物,使设备腐蚀、结焦并影响润滑油产品的质量。
Furfural refining of lubricant is an import method to improve the quality of lubricant . However , furfural is easily oxidized to produce furoic acid and resin oxides which will result in corrosion and coking of equipment and affect the quality of lubricant product .