以下为句子列表：
英文: Abstract: A high performance liquid chromatography (HPLC) method for determing the 2,4-/2 ,6- isomer ratio in commercial. toluene diisocyanate (TDI) was developed.
中文: 文摘:建立了测定工业甲苯二异氰酸酯中2，4-和2，6-体异构比的液相色谱法。
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英文: An one-pot process including direct condensation of ethyl isodehydracetate and hydrocitronellal, followed by decarboxylation, isomerization and isomer resolution, was developed for practical preparation of ZR juvenile hormone analogue series with high con
中文: 摘要以异脱氢乙酸乙酯与甲氧基香茅醛直接缩合为起点，将缩合、脱羧、异构化、（顺、反）异构体拆分等采用多步反应连续一锅法的操作方法，成功地得到高有效含量的ZR型保幼激素类似物。
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英文: An one-pot process including direct condensation of ethyl isodehydracetate and hydrocitronellal,followed by decarboxylation, isomerization and isomer resolution, was developed for practical preparation of ZR juvenile hormone analogue series with high cont
中文: 以异脱氢乙酸乙酯与甲氧基香茅醛直接缩合为起点,将缩合、脱羧、异构化、(顺、反)异构体拆分等采用多步反应连续一锅法的操作方法,成功地得到高有效含量的ZR型保幼激素类似物。
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英文: Methods Atomoxetine hydrochloride was synthesized using 3-phenyipropanol as the starting material via six steps, such as chlorination, bromination, etherification, substitution, separation of levorotary isomer and acidification by gaseous hydrogen chlorid
中文: 方法以1-苯丙醇为起始原料，经氯代、溴代、醚化、胺化、拆分、氯化氢成盐6步反应合成盐酸托莫西汀。
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英文: Though more specific analytical issues concerning microbiological assay radioimmunoassay and stereoisomer assay were not examined, this article should provide good guidance to pharmaceutical chemists to properly perform analytical method validation and ca
中文: 作者将为从事分析方法认证的工作者提供指南，但对专属分析方法的认证如微生物分析，同位素免疫分析及立体异构体分析未及论述。
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