以下为句子列表：
英文: Diisopropyl succinate was synthesized from succinic acid and isopropanol with p-methyl benzenesulfonic acid as catalyst.
中文: 摘要以丁二酸和异丙醇为原料及对甲基苯磺酸为催化剂，催化合成丁二酸二异丙酯。
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英文: Itaconic acid, also named “Methylene Succinic acid”, is important industrial raw material during the production of acrylic fiber, latex, synthetic resin, plastic, rubber, pharmaceutics surfactant, packing material of non-toxic food, herbicide, cleaning me
中文: 衣康酸，又名“甲叉丁二酸”，是生产腈纶等纤维、胶乳，合成树脂、塑料、橡胶、医药、表面活性剂、无毒食品包装材料、除草剂、除垢剂、粘着剂及塑料助剂等的工业原料。
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英文: Succinic acid (butanedioic acid) A dicarboxylic acid formed by fermentation of sugars.
中文: 琥珀酸：为糖酵解过程中产生的二羧基酸。
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英文: They contain nitrogen and usually occur as salts of asids such as citric, malic, and succinic acids such as citric, malic, and succinic acids.
中文: 它们是一类含氮的，一般由酸性盐如柠檬酸，苹果酸，琥珀酸所形成。
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英文: Four compounds were isolated from the rhizome of Costus tonkinensis and elucidated as tetracosanoic acid(7), succinic acid(8), β sitosterol(9) and daucosterin(0).
中文: 从光叶闭鞘姜中分离鉴定了 个化合物 ,为二十四烷酸 (7) ,琥珀酸(8) ,β 谷甾醇 (9) ,胡萝卜苷 (0 )。
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