查询词典 hydroxy-acetophenone

The myristic-2-hydroxy-3-propane sulfonic acid sodium salt was synthesized from sodium bisulfite, epichlorohydrin, sodium phosphate and myristic acid. The influence factors of temperature, amount of catalyst, reaction time and reactant ratio on conversion were studied.

以亚硫酸氢钠、环氧氯丙烷、磷酸钠和肉豆蒄酸等为原料，合成了肉豆蒄酸－2-羟基－3-磺酸钠丙酯，探索了反应温度、催化剂、反应时间、反应物物质的量比等因素对合成的影响。

Linear and star-shaped hydroxy-terminated polys were synthesized by reacting L-lactide with co-initiators such as poly,hydroxyethyl methycrylate,trimethylolpropane,mannitol and sorbierite in the presence of stannous octoate as catalyst.

以辛酸亚锡为催化剂，分别以聚乙二醇、甲基丙烯酸羟乙酯、三羟甲基丙烷、季戊四醇、甘露醇和山梨醇等和L-丙交酯反应，得到末端为羟基的线形和星形聚L-丙交酯。

In recent years, the company excellent location advantages, multi-introduction of advanced production equipment and technology to improve old products and develop new products to 12 - hydroxy acid-based rigid and at the same time the production of refined castor oil, hydrogenated castor oil, refined Gan oil, Sebacate methacrylate (annual output 1500 tons), dibutyl sebacate (annual output 1500 tons), octyl sebacate, anhydrous sodium sulfate, castor meal and other products.

近年来，公司以优越的区位优势，多方引进先进的生产设备和技术，改进旧产品，拓展新产品，以 12 －羟基硬质酸为主，又同时生产精炼蓖麻油、氢化蓖麻油，精甘油，癸二酸二甲酯（年产量 1500 吨），癸二酸二丁酯（年产量 1500 吨），癸二酸二辛酯，无水硫酸钠，蓖麻粕等产品。

RESULTS: A new methyl orsellinate glycoside, methyl 2-hydroxy-6-methyl benzoate 4-O-β-D-glucopyranoside (1) and a known methyl orsellinate (2) were isolated from this plant.

结果：从樱草杜鹃中分离得到1个新化合物，鉴定为2-羟基－6-甲基苯甲酸甲酯4-O-β-D-葡萄糖苷(1)，及苔色酸甲酯(2)。

By using gas chromatography technique nine kinds of fragrance components(acetic aldehyde,ethyl acetate,ethanol,propyl acetate,3-hydroxy-2-butanone,acetic acid,furfural,metacetonic acid,2,3-butylene glycol)were measured quantitatively in different kinds of Shanxi overmature vinegar and the other kinds of vinegar.

应用气相色谱方法对山西老陈醋和其他种类醋的9种香气成分(乙醛、乙酸乙酯、乙醇、乙酸丙酯、3-羟基-2-丁酮、乙酸、糖醛、丙酸、2，3-丁二醇)进行了定性、定量测定，并用聚类分析、模糊综合评判、方差分析、回归分析的方法对实验结果进行了数理分析。

Studies on Synthesis and Crystal Structure of N, N'-Bis(4-Hydroxy-3-Methoxybenzyl) Oxalamide

篇名 N，N'-双（4-羟基－3-甲氧基苯甲基）草酰胺的合成及晶体结构研究

The new oxalamide bridging ligands N, N'-bis (4-hydroxy-3-methoxy-benzyl) oxalamide (H4LB) was designed and synthesized.

设计合成一种新型对称的草酰胺桥联配体：N，N'-二（4-羟基－3-甲氧基苯甲基）草酰胺配体(H4LB)。

The formation of the by-products occurring with the aldononitrileacetates of glucose and galactose can be overcome by increasing the ratio of hydroxy-lamine hydrochloride to water in the solution before oximation and acetylation.

通过不断摸索，本文首次找到了在糖腈乙酰酯法制备单糖衍生物过程中控制葡萄糖和半乳糖不出杂峰的条件，并给出了一套快速、准确和实用的日常分析方法。

Microcrystalline cellulose was activated with NaOH solution, then its C2-C3 bond was oxidized with NaIO4 to generate oxycellulose under the acidic condition. The hydroxy on C6 in oxycellulose was chlorinated with sulfur oxychloride in DMF to give oxycellulose chloride.

将微晶纤维素先用NaOH溶液进行活化，然后在酸性条件下，用NaIO4氧化2，3位成为醛基，使其成为氧化纤维素，再将其在DMF下用二氯亚砜进行六位氯化制得氧化纤维氯化产物。

Methods:2-Hydroxy-4-methyl-3-nitropyridine was reacted with phosphorous pentachloride to give 2-chloro-4-methyl-3-nitropyridine.

以4-甲基-3-硝基-2-羟基吡啶为起始原料，与五氯化磷进行卤代反应制得4-甲基-3-硝基-2-氯吡啶。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。