Cahn-Ingold-Prelog 1956 priority rules for stereo: atomic number, then mass-number, then phantom-atom rule; assigns R/S at chiral centers + E/Z at double bonds.
Cahn-Ingold-Prelog 1956 priority rules for stereo: atomic number, then mass-number, then phantom-atom rule; assigns R/S at chiral centers + E/Z at double bonds.