Objective:The aim of the study was to establish a GC-MS method for the determination
of extractable substances in the stoppers of Ceftriaxone sodium bottles for injection, to establish
an HPLC method for the determination of vulcanizing agent and antioxidant in Ceftriaxone
sodium for injection bottle stopper and to analyze the correlation between the volatile substances
of the rubber stopper and the clarity of solutionMethods:GC-MS method was used with capillary column Restek rtx-5 (30.0 m×0.25 mm, 0.25
μm), the carrier gas was He at the flow rate of 1.8mL·min-1, the column temperature was programmed
temperature, and the scanning range was from29 to 600(m/z), and the volatile substances
were using full scan. An inertsil ODS-3column(250 mm×4.6 mm, 5 μm) was used for the
HPLC analysis. The mobile phase A consisted of water containing 0.04% trifluoroacetic, and the
mobile phase B consisted of acetonitrile containing 0.04% trifluoroacetic acid, the gradient elution
was used, and the flow rate was set as 1.0 mL·min-1.Results:Antioxidant BHT(264), silicone oil, and other organic compounds in the rubber stopper
permeated and migrated to the sample with acceleration time by GC-MS. A good linearity was observed
over the range of 0.5-100 μg·mL-1(r>0.999). The detection limits of the vulcanizing agent
and antioxidant were about 0.03 μg·mL-1, and the quantitation limits were about 0.1 μg·mL-1. The
average recoveries (low, medium, and high) of antioxidants (168, 264, 330, 1076, 1010) and vulcanizing
agents (carbon disulfide, sulfur) were between 90.0% and 110.0%, and the corresponding
RSD were less than 5% (n=9) by adding standard recovery experiments. The stability test showed
that the antioxidant and the vulcanizing agent solution had good stability and was stable within 24
hours.Conclusion:The GC-MS/HPLC method can be used to control the quality of the rubber stopper
of cefuroxime sodium for injection. The compatibility study and comprehensive evaluation system
of Ceftriaxone sodium for injection packaging materials have been initially formed.