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. 2021 Mar 8;16(3):e0247102. doi: 10.1371/journal.pone.0247102

Fig 4. 1H NMR fragment of the spectrum of a urine sample collected after the administration of 100 mg of the drug.

Fig 4

The spectrum is compared to the spectra of salicylic and salicyluric acid (a) and with the spectrum of hippuric acid (b).