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The analytical method involves saponification with methanolic potassium hydroxide , extraction with cyclohexane , and determination by high - performance liquid chromatography .
 methanolic potassium hydroxide, cyclohexane
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 methanolic potassium hydroxide, cyclohexane