Gemini nmr spectrometer

Melting points were determined on a Stuart melting point device and they are uncorrected. The ¹H and ¹³C-NMR spectra were recorded in DMSO-d₆ as solvent at 300 MHz and 75 MHz, respectively on Varian Gemini NMR spectrometer using Tetramethylsilane (TMS) as internal standard. Chemical shifts are reported in δ units (ppm). The IR spectra were recorded as KBr using a Bruker-vector 22 spectrophotometer FTIR. Mass spectra were measured on a Shimadzu GMSS -QP-1000 EX mass spectrometer at 70 eV. The elemental analyses were performed at the Microanalytical Center, Cairo University.

The melting points are uncorrected and measured on an Electrothermal instrument (9100). Infrared spectra were recorded on a Perkin Elmer 1430 spectrophotometer (KBr pellet). On a Varian Gemini NMR spectrometer using tetramethylsilane as the internal reference and the results are expected as δ value, the ¹H NMR and.¹³C NMR spectra were recorded at deuterated dimethylsulfoxide at 300 and 75 MHz. Mass spectra were performed on a Shimadzu GCMS-QP 1000 Ex mass spectrometer at 70 eV. Elemental analysis was performed at the Center for Microanalyses of Cairo University, Giza, Egypt. Enzyme, cell cycle and apoptosis inhibition were performed at VACSERA, Cairo, Egypt. Compound 1 was prepared according to the previous literature [34 (link)]