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Specimen 13 C NMR spectra of some DHPMs:Part-IIIResults and Discussion3. 13 C NMR spectrum of [4-(4-chlorophenyl)-6-methyl-2-thioxo-1,2,3,4-tetrahydropyrimidin-5-yl](phenyl)methanone(VIIxx)ClOHNS NHCH 3JB-101Molecular Formula = C 18 H 15 ClN 2 OSFormula Weight = 342.842513 C NMR 400 MHz (DMSO-d 6 , δppm): 17.81, 54.98, 76.87, 77.19, 77.51, 127.42,127.52, 128.06, 131.37, 140.92.Specimen Mass spectra of some DHPMs:4. Mass spectrum of 5-benzoyl-4-(4-chlorophenyl)-6-methyl-3,4-dihydropyrimidin-2(1H)-one (VIIii)ClOHNO NHCH 3JB-2003Molecular Formula = C 18H 15ClN 2O 2Formula Weight = 326.7769Mass m/e: [M + ] 326, 311, 215, 185, 105, 77.465