Results Two compounds were isolated and identified as 8-carboxymethyl-p-hydroxycinnamic acid ethyl ester(1) and 8-carboxymethyl-p-hydroxycinnamic acid methyl ester(2).
结果分离并鉴定了2个化合物，分别为：8-羧甲基-对羟基肉桂酸乙酯（1）和8-羧甲基-对羟基肉桂酸甲酯（2）。
Recent media reports that a batch of Coke Zero concentrate from Shanghai contained the banned preservative methyl-p-hydroxybenzoate sparked concern about the safety of beverages.
最近的媒体报道，一批来自上海零度可乐原液中含有“对羟基苯甲酸甲酯”防腐剂，引发了大家对饮料安全性的关注。
In the case of dyeing knitted polyester fabrics, the problem of uneven dyeing may be solved by adding "auxiliary-P", an emulsified solution containing methyl naphthalene.
本文介绍用载体助染剂-P（甲基萘乳化液）回修涤纶经编坯布染色不匀的技术。
Methods: The neuronal apoptosis in CA 1 region of hippocampus following ischemia reperfusion was detected using the MG P MY staining method which combined methyl green, pyronine and martius yellow.
方法：应用甲基绿-派洛宁-马休黄组合染色法，检测沙土鼠脑缺血后海马神经元的凋亡。
The possibility of preparing p-methyl styrene from p-ethyltoluene by dehydrogenation on iron oxide catalyst originally used for dehydrogenation of ethyl benzene was studied.
探讨了乙苯脱氢的氧化铁系催化剂用于对乙基甲苯脱氢制取对甲基乙烯的可能性。
A new process has been developed to synthesize p-aminophenol methyl ether from p-nitrophenol methyl ether by catalytic hydrogenation, using ammonia synthesis gas instead of pure hydrogen.
采用合成氨厂氨合成气代替纯氢气催化氢化邻硝基苯甲醚合成邻氨基苯甲醚的新工艺，探讨了合成反应条件对邻氨基苯甲醚收率的影响规律。
Bis(p-hydroxybenzonic acid butanediolate)(BBHB)as mesogenic unit was prepared with methyl p-hydroxybenzoate, 1,4-butanediol and catalyst by melting transesterification.
以对羟基苯甲酸甲酯、1，4丁二醇为主要原料，经熔融酯交换合成介晶基元双-对羟基苯甲酸丁二醇酯（BBHB）；
Original producing o(p) -nitrophenyl methyl ether methods are batch process with long cycle, high energy consumption and low efficiency.
生产邻（对）硝基苯甲醚的传统方法都是间歇法操作，周期长、能耗高、效率低。
INGREDIENTS: Deionized water, hydrogenated poly-decene, methyl p-hydroxybenzoate p-hydroxybenzoic acid propyl, acrylic acid copolymer, mineral oil, daily flavor.
主要成份：去离子水、氢化聚癸烯、对羟基苯甲酸甲酯、对羟基苯甲酸丙酯、丙烯酸共聚物、矿物油、香料。
A new process has been developed to synthesize p-aminophenol methyl ether from p-nitrophenol methyl ether by catalytic hydrogenation, using ammonia synthesis gas instead of pure hydrogen.
采用合成氨厂的氨合成气代替纯氢气使脂肪腈加压催化氢化 ，可一步制得双脂肪烃基仲胺。
The chromatographic separation methods of the chiral pesticides and their intermediates, such as cypermethrin, cyfluthrin, quezalofop-p-ethyl, haloxyfop-p-methyl were summarized in this article.
对有代表性的氯氰菊酯、 氯氟氰菊酯、精禾草克、精盖草能等手性农药及其中间体对映体的色谱分离方法进行了总结。
Using AlCl3as catalyst, N-cyanoethyl-p-methyl aniline was synthesized from p-methyl aniline and acrylonitrile.
用三氯化铝作催化剂，对甲苯胺与丙烯腈反应合成N -氰乙基对甲苯胺。
RESULT: A deoxyuridine was isolated from 70% alcohol extract and identified as as 5-methyl-3′, 5′-di-O-(p-chlorobenzoyl)-2′-deoxyuridine.
结果：从广枣70 %乙醇提取物中分离出一个胸腺嘧啶脱氧尿苷类化合物，结构为5-甲基-3′ ，5′-二氧-（对氯苯甲酰基）-2′-脱氧尿苷。
RESULT: A deoxyuridine was isolated from 70% alcohol extract and identified as as 5-methyl-3′, 5′-di-O-(p-chlorobenzoyl)-2′-deoxyuridine.
结果：从广枣70 %乙醇提取物中分离出一个胸腺嘧啶脱氧尿苷类化合物，结构为5-甲基-3′ ，5′-二氧-（对氯苯甲酰基）-2′-脱氧尿苷。
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