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止痒叮为我院特色制剂，其处方为薄荷脑、苯酚和水杨酸各Zg，75％乙醇至100ml。临床用于皮肤搔痒症，具有清凉、止痒及消毒之功效。本文采用旋光法测定薄荷脑含量，二阶导数和单波长紫外分光光度法分别测定苯酚和水杨酸的含量，结果满意。回仪器与试药1．1仪器：HP8453紫外一可
Antipruritic bite for the characteristics of our hospital formulations, the prescription for the menthol, phenol and salicylic acid each Zg, 75% ethanol to 100ml. Clinical pruritus for the skin, with a cool, itching and disinfection effect. In this paper, the contents of phenol and salicylic acid were determined by polarimetry, second derivative and single-wavelength UV spectrophotometry. The results were satisfactory. Instrument and reagent 1.1 Instrument: HP8453 UV one can be