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. 2020 May 24;25(10):2445. doi: 10.3390/molecules25102445

Figure 1.

Figure 1

(a) Chromatogram of creatinine standard (10 µg/mL, 0.1% TFA, Rt = 4.6 min); (b) Chromatograms of creatinine extracted from pig urine samples with different TFA content in mobile phase: A—0.01% TFA, Rt = 3.1 min, B—0.05% TFA, Rt = 3.6 min, C—0.1% TFA, Rt=4.6 min.