dihydroxy 中文意思是什麼

dihydroxy 解釋
二羥基
  1. Carboxy phenyl dihydroxy arsine

    羧苯亞胂酸
  2. Study on the synthesis and antimicrobial activities of brominated dihydroxy diphenyl ethers

    溴代二羥基二苯醚類化合物的合成與抑菌活性研究
  3. Two kinds of flavonoids in water extracts, water - extraction and alcohol precipitation, alcohol extracts were found by paper chromatography. they were separated and purified by thin - layer chromatography, one of which was primarily identified by uv as 4 ", 5 - dihydroxy - flavonol etherification or 4 ", 5, 8 - trihydroxy - flavonol etherification

    水提物、水提醇沉物、醇提物等3種提取物紙層析結果顯示有兩種黃酮類化合物，經薄層層析分離純化，並進行紫外光譜分析，初步測定其中一組分為4 ， 5 -二羥基黃酮醇醚或4 ， 5 ， 8 -三羥基黃酮醇醚。
  4. Through molecular design, a series of liquid crystalline copolyesters, which possibly possessed the auxetic behavior, were prepared by solution condensation reaction between 2, 5 - bis ( p - alkoxy benzoyloxy ) hydrobenzoquinone, 4, 4 ' - ( decanoxy ) dibenzoyl chloride and 4, 4 ' - dihydroxy - oc, co - diphenoxydecane

    經分子設計，通過2 ， 5 ?二（對烷氧基苯酰氧基）對苯二酚、 4 ， 4 』 ?二羥基? ， ?二苯氧基癸烷和4 ， 4 』 ? （癸二酰氧基）二苯甲酰氯之間的縮合反應合成了一系列具有負泊松比潛能的液晶共聚酯。
  5. Spectrophotometric study on supermolecule color reaction between serum proteins and 2 - 4 - sulfophenylazo - 1, 8 - dihydroxy 3, 6 - naphthalenedisulphonic acid and its applications

    萘二磺酸與蛋白質超分子顯色反應的研究及應用
  6. Hydroxyquinol triacetate was prepared from p - benzoquinone by 1, 4 - addition reaction with acetic anhydride and then 6, 7 - dihydroxy coumarin was synthesized from it by hydrolyze and cyclization in concentrated sulfuric acid. then 6, 7 - dimethoxy coumarin was synthesized by methylating from 6, 7 - dihydroxy coumarin with an overall yield of 74. 4 %. the procedure was practical. its structure was confirmed by ir and 1hnmr

    對苯醌與乙酸酐經1 ， 4 -加成生成1 ， 2 ， 4 -苯三酚三乙酸酯，然後與蘋果酸反應經水解、環合反應得6 ， 7 -二羥基香豆素，再經甲基化得到6 ， 7 -二甲氧基香豆素，總收率為74 . 4 % ，整個過程反應條件溫和，操作方便，適合工業生產的要求，對產品結構進行了ir和1hnmr表徵。
  7. Color reaction of 2 - 4 - chloro - 2 - phosphophenylazo - 7 - 2, 4 - dichlorophenylazo - 1, 8 - dihydroxy - 3, 6 - naphthalene sulfonic acid with bismuth and its application

    萘二磺酸與鉍的顯色反應研究及應用
  8. Effects of tertiary butylhydroquinone and 1, 1 - di 2 ', 5 ' - dihydroxy - 4 ' - butyl - phenyl ethane in curing and prevention of experimental atherosclerosis

    乙烷和叔丁基對苯二酚對鵪鶉實驗性動脈粥樣硬化的影響
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