| 摘要 |
In a method for determining cholinesterase (hereinafter referred to as ChE) activity, the improvement comprising by using, as a substrate, a protocatechuoylcholine derivative represented by the general formula (I), <IMAGE> (wherein X is a halogen atom). The method for determining ChE activity according to the present invention is free from defects of the conventional methods, has many advantages and characteristics, permits accurate and simple determination of ChE activity, and can sufficiently contribute to determination of ChE activity in daily clinical examinations.
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