Determination of genotoxic impurities N-nitrosodimethylamine and N-nitrosodiethylaminein in cefoperazone sodium and its preparations by UPLC-MS/MS
Objective This study established an UPLC-MS/MS method for determination of genotoxic imputrity N-nitrosodimethylamine(NDMA)and N-nitrosodiethylamine(NDEA)in cefoperazone sodium and its preparations.Methods The analytes were separated on a GL Sciences Inertsil™ ODS-3(100 mm×3.0 mm,3μm)column.0.1%formic acid was used as mobile phase A,methanol containing 0.1%formic acid was used as mobile phase B,and the gradient elution method was used.The flow was set at 0.3 mL/min,with a column temperature of 35 ℃.The target compound was analyzed in the positive ion SIM mode.Results The linear range of NDMA was in the range of 0.5416~270.8 ng/mL,the limit of detection(LOD)and the limit of quantitation(LOQ)were 0.008 and 0.01 ppb,and the recoveries were 99.3%-107.0%.The linear range of NDEA was in the range of 0.1463~73.14 ng/mL,the limit of detection(LOD)and the limit of quantitation(LOQ)were 0.001 ppb and 0.002 ppb and the recoveries were 90.0%-96.0%.The method was used to determine NDMA an NDEA in 7 batches of raw material,66 batches of preparations,and influencing factors test samples.NDMA was detected in 3 batches of raw material and 30 batches of preparations.No NDEA was detected in all samples.NDMA and NDEA did not increase under the influence factor test.Conclusion This method was accurate,specific,and sensitive.It could be used for analysis of the NDMA and NDEA in cefoperazone sodium and its preparations.Enterprises should pay attention to the quality control of APIs.
Cefoperazone sodiumCefoperazone sodium for injectionN-nitrosodimethylamine(NDMA)N-nitrosodiethylamine(NDEA)UPLC-MS/MSGenotoxic impurity