Multiple bonds are considered as the equivalent number of single bonded atoms.
MDL uses a parity descriptor instead of some of this system's rules. This system is implemented in the SMILES specification with the use of forward slashes, back slashes and at marks. In this system, anomers are distinguished by alpha and beta. Multiple bonds are considered as the equivalent number of single bonded atoms. This system set forth in the Buergenstock Declaration depends only on absolute configuration and does not account for optical rotation. It also includes the conventions for labeling alkene systems as entgegen or zusammen. This system prioritizes substituents with higher atomic numbers, and assigns each stereocenter as either R or S. For 10 points, name this set of triply-eponymous rules for naming stereoisomers.
MDL uses a parity descriptor instead of some of this system's rules.
Cahn-Ingold-Prelog rules or CIP (accept R/S rules until mentioned)