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Chemcial Industry and Engineering 2025, Vol. 42 Issue (1) :106-112    DOI: 10.13353/j.issn.1004.9533.20240507
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Determination of two genotoxic impurities in sulconazole nitrate by combining derivatization with LC-MS method
GUO Zhiqiang, LI Tiejun, SUN Yingji, LI Peipei, WANG Qi
Jewim Pharmaceutical (Shandong) Co., Ltd., Taian 271000, Shandong, China

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Abstract An analytical method was established for the determination of alkyl sulfate esters genotoxic impurities in sulconazole nitrate, including dimethyl sulfate and diethyl sulfate. The separation was performed on an HILIC column(2.1 mm×50 mm, 3 μm) utilizing the aqueous phase of 20 mmol·L-1 ammonium formate solution-formic acid (1 000∶1) and the organic phase of acetonitrile with isocratic elution(10∶90) at the flow rate of 0.2 mL·min-1. The column temperature was set at 20 ℃. Multiple reaction monitoring (MRM) mode was performed on quantitative determination. Effects of temperature and time for derivatization were investigated. Under the conditions, the linear correlation coefficient of dimethyl sulfate and diethyl sulfate were 0.999 7 and 0.998 9, respectively. And the recovery were 80.3%—102.3% and 90.3%—100.0%, respectively. The operation is simple and meets the requirements of quantitative analysis.
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GUO Zhiqiang
LI Tiejun
SUN Yingji
LI Peipei
WANG Qi
Keywordssulconazole nitrate   derivatization   LC-MS   genotoxic impurities   dimethyl sulfate   diethyl sulfate     
Received 2024-05-24;
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GUO Zhiqiang, LI Tiejun, SUN Yingji, LI Peipei, WANG Qi.Determination of two genotoxic impurities in sulconazole nitrate by combining derivatization with LC-MS method[J]  Chemcial Industry and Engineering, 2025,V42(1): 106-112
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