Hu, Xiao published the artcileDetermination of S-omeprazole sodium and the related substances by RP-HPLC, Product Details of C17H18N3NaO3S, the publication is Zhongguo Yaofang (2009), 20(22), 1744-1746, database is CAplus.
The aim of this paper is to establish an RP-HPLC method for content determination of S-omeprazole sodium and its related substances. The separation of S-omeprazole sodium and the related substances was carried out on a Phenomenex Luna C1V8 column, and the mobile phase consisted of methanol-0.033 mol/L-1 ammonium dihydrogen phosphate-triethylamine. The detection wavelength was 302 nm, the flow rate was 1.0 mL/min-1, the column temperature was 25°, and the sample size was 20 μL. The linear range of omeprazole sodium was 10-500 mg/L-1 (r = 0.9997). The average recovery rate was 100.27% (RSD = 0.74%). The average content of the related substances in samples was 0.42%. This method is simple, accurate, specific, and applicable for content determination of S-omeprazole sodium and its related substances.
Zhongguo Yaofang published new progress about 161796-78-7. 161796-78-7 belongs to imidazoles-derivatives, auxiliary class Membrane Transporter/Ion Channel,Proton Pump, name is Sodium (S)-6-methoxy-2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfinyl)benzo[d]imidazol-1-ide, and the molecular formula is C17H18N3NaO3S, Product Details of C17H18N3NaO3S.
Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem