Methyl a-D-ribofuranoside is a molecule that belongs to the group of conformers. It is a planar molecule, with its atoms in an orderly arrangement. The conformation of this molecule can be changed by rotating around the C-C bond, which has energies and displacements. Molecular orbital theory predicts that the conformation of methyl a-D-ribofuranoside is determined by the electron correlation between all atomic orbitals. The molecular structure of methyl a-D-ribofuranoside can be determined using spectroscopic methods, such as infrared and nuclear magnetic resonance spectroscopy. Coupling constants are used to measure how strongly two or more groups in a molecule are coupled together, while constants are used to measure the energy levels and frequencies in vibrational spectroscopy.