Additional file 1 of Biological evaluation of novel gemcitabine analog in patient-derived xenograft models of pancreatic cancer

Additional file 1: Supplementary Fig 1. A (SF 1A). HPLC spectrum for detecting the purity of 4NSG at 98.8% with a wavelength of 254 nm. B (SF 1B). Nuclear magnetic resonance spectrum for 4NSG. (a) 4NSG proton nuclear magnetic resonance (1H NMR) peaks at 10.88 ppm (-CO-NH) and 1.38–1.04 ppm (-CH2)15 representing the amide linkage and long-chain methylene group contributed by stearic acid respectively. (b) amide carbonyl carbon in 4NSG displays a characteristic C-13 NMR peak at 174.55 ppm. C (SF 1C). Mass spectrum for 4NSG at 530.59 m/z.