PCTFE exhibits a permanent dipole moment due to the molecular asymmetry of its repeating unit.
2.
Controlled molecular asymmetry ( or enantioselectivity ) is crucial for controlling the bioactivity of the synthesized molecules and demanded by drug authorities in drug synthesis.
3.
Later the amino acid alanine, which is also a protein amino acid, was found to have an excess of the L-configuration, which led several to suspect terrestrial contamination according to the argument that it would be " unusual for an abiotic stereoselective decomposition or synthesis of amino acids to occur with protein amino acids but not with non-protein amino acids . " In 1997, L-excesses were also found in a non-protein amino acid, isovaline, suggesting an extraterrestrial source for molecular asymmetry in the Solar System.
मोबाइल