• 由于氨基苯广泛用于畜禽饲料添加剂中,不仅对畜禽产品造成残留而且还对环境带来污染,日益威胁生态环境,为此我们进行研究

    With the extensive use in addition agent of multipara, the arsanilic acid has resulted in remnant in products and environment pollution. So we carry out this research.

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  • 应用日立835-50氨基自动分析仪测定唑作用体外培养猪囊虫氨基含量

    The contents of free amino acid (FAA) in Cysticercus cellulosae affected by albendazole in vitro were determined by using 835-50 type of automatic amino acid analyzer.

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  • 本文简要说明了这种仪器原理、结构特征,给出了制备分离甾族反应混合物吲哚类植物激素、二硝基氨基的应用结果

    In this paper, the results of preparative separations of steroid reaction pro-ducts, indole auxins, and DNP amino acid mixture with suitable two-phasesolvent systems is introduced.

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  • 以对氨基水杨原料,经酯化、化反应得乙氧酯,收率为87.4%。

    Ethopabate is prepared via esterification, acylation and alkylation from p-aminosalicylic acid in87.4% overall yield.

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  • 结果:7- 氨基-3-去乙酰氧基头孢(7-ADCA)甘氨邓钠反应,只需要一步结晶即可得头孢氨苄,收率89.4%。

    Result: Through the reaction of 7-ADCA and Dane Salt, one step crystallization gives Cefalexin with the total yield 89.4% .

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  • 并恶唑酮为原料,硝化、加压水解反应合成了2-氨基-5-硝基酚,收率达70%以上。

    The other intermediate of dyes, 2-amino-5-nitrophenol, was prepared by nitration and hydrolyze starting from benzooxozolenone. The total yield is over 70% and the purity 98.8% by the analysis of HPLC.

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  • 并恶唑酮为原料,硝化、加压水解反应合成了2-氨基-5-硝基酚,收率达70%以上。

    The other intermediate of dyes, 2-amino-5-nitrophenol, was prepared by nitration and hydrolyze starting from benzooxozolenone. The total yield is over 70% and the purity 98.8% by the analysis of HPLC.

    youdao

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