The invention provides a liquid
chromatography detection method of 4-[(4-fluorophenylimino) methyl]-
phenol. The liquid
chromatography detection method is implemented under the following chromatographic conditions: a
chromatographic column is formed by a
silica gel column, an amino column, a cyano column, a phenyl column and a chiral column, a mobile phase is formed by n-
hexane (A) and isopropanol (B), n-
hexane (A) and
ethanol (B), n-
heptane (A) and isopropanol (B), or n-
heptane (A) and
ethanol (B), a ratio of A to B in the mobile phase is (95:5) to (70:30), the mobile speed of the mobile phase is 0.2-2.0mL / min, the detection
wavelength is 200-400nm, the
column temperature is 25-40 DEG C, and an
ultraviolet detector or a
diode array
detector is adopted. The detection method is normal-phase liquid
chromatography. The detection method is high in sensitivity and specificity, is simple and convenient in operation, has a degree of separation meeting the standards, can be used for rapidly and accurately detecting related substances and the content of 4-[(4-fluorophenylimino) methyl]-
phenol, can be applied to
quality control of 4-[(4-fluorophenylimino) methyl]-
phenol, and has important significance to synthesis of a
cholesterol absorption inhibitor, namely
ezetimibe.