"Intermediate"通常指化工生产中的中间体,是合成最终产品的关键步骤。其分子式、CAS号及用途因具体化合物而异。例如,苯胺(C6H5NH2, CAS 62-53-3)是染料、药物的重要中间体;乙酸酐(C4H6O3, CAS 108-24-7)用于生产醋酸纤维素。中间体广泛应用于医药、农药、染料等领域,是精细化工的核心组成部分。其选择直接影响最终产品的质量和成本。
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