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- hydroxy propane tricarboxylic acid 羟基丙烷三酸
- alkoxy hydroxy propane sulfonate 烷氧基羟基丙基磺酸盐
- hydroxy propanal 羟基丙醛
- They contain one or more functional group such as amide, hydroxy, or carboxy. 它们含有一个或多个功能团如:氨基、羟基、羧基。
- The substance was identified as 22 hydroxy 23, 24 bisnorchol 4 ene 3 one. 待鉴定产物为 2 0 羟基 2 3,2 4 二降胆 4 烯 3 酮。
- The hydroxy proline contents were measured with the chloramine T method. 采用氯胺T法测定羟脯氨酸含量,为心肌胶原总含量。
- In this paper, the preparation of hydroxy ethyl chitosan sulfate was studied. 研究了磺化羟乙基壳聚糖的制备方法。
- Recent development in hydroformylation of ethene to propanal by catalytic synthesis is introduced in this paper. 本文综述了采用均相催化剂、均相固载化催化剂以及多相催化剂催化合成丙醛的研究成果。
- Among these products the production of propanal, propanol and propionic acid remains almost a blank in China. 介绍了世界丙醛系列产品的生产与应用。
- Aluminum propoxide for the Tishchenko condensation of propanal to propyl propionate is prepared from aluminum powder and propanol. 以合成出的丙醇铝为催化剂,无水氯化锌为助催化剂,用丙醛一步合成了丙酸丙酯,收率可达92%25,选择性可达93%25。
- An anhydride formed by the removal of a water molecule from the hydroxyl and carboxyl radicals of hydroxy acids. 内酯一种通过从酸的羧基中除去一个水分子而形成的脱水物
- The engineering feasibility of making propanal, propanoic acid, and propanol by high-pressure oxoprocess was reviewed. The productive suggestion was also proposed. 探讨了利用高压羰基合成装置生产丙醛,进而生产两酸、丙醇的可行性。并提出了吉化生产上述产品的建议。
- Study on Flavonoids Extraction and Function of Scavenging Hydroxy Free Radical from Lespeda. Dunnii. 春花胡枝子黄酮类化合物的提取及清除羟自由基作用的研究。
- Research results of catalytic synthesis propanal by homogeneous catalysts,immobilized homogeneous catalysts and heterogeneous catalysts are also reviewed.These results sho... 不同的催化剂在活性、选择性、稳定性等方面各有特点,而多相催化剂由于其稳定性好、易于分离等特点将成为今后该领域的重要研究方向。
- RT-PCR discove r ed mRNA of NSE(neuron specific enolase),Nurr1,Ptx3,Lmx1b and Tyrosine hydroxy lase(TH)were positive. RT-PCR结果显示NSE(neuron specificenolase)、Nurr1、Ptx3、Lmx1b和TH的mRNA均有表达;
- The forth step is to synthesize 5- hydroxy -5- methyl- 3,4- diphenylisoxazoline. 合成4-(5-甲基-3-苯基异?f唑-4-基)苯磺酰胺是重要的步骤,对其合成方法进行了对比。 采用反应5h的方法进行合成。
- The hydroxy methyl contents of resinous crosslinking agent from different resources were determined. 测定了不同产地的树脂交联剂的羟甲基含量;
- These dual-action deep cleansing towelettes with Alpha Hydroxy,Retinol and Vitamin C unfold to a full size. 含有充足的果酸、松香油和维生素C,具有深层洁肤、双重作用。
- Ethyl chloroformate reacted with both the hydroxy group and the carboxy group of the 17 position. 用氯甲酸乙酯将17位醇羟基和羧羟基同时酰化;
- As open-chain hydroxy aldehydes and hydroxyl ketenes, the monosaccharides are very reactive. 以开链的羟基醛和羟基酮形式 存在的单糖非常活泼。