Positional isomer definition
Positional isomer means any substance that
Positional isomer means any substance that possesses the same molecular formula and core structure and that has the same functional group or substituent as those found in the respective controlled substance, attached at any positions on the core structure, but in such manner that no new chemical functionalities are created and no existing chemical functionalities are destroyed relative to the respective controlled substance. Rearrangements of alkyl moieties within or between functional groups or substituents, or divisions or combinations of alkyl moieties, which do not create new chemical functionalities or destroy existing chemical functionalities, are allowed and include result- ing compounds that are positional isomers. As used in this definition, the term “core structure” means the parent molecule that is the common basis for the class that includes, but is not limited to, tryptamine, phe- nethylamine, or ergoline. Examples of rearrangements resulting in creation or destruction of chemical function- alities, and therefore resulting in compounds that are not positional isomers, include, but are not limited to, ethoxy to alpha-hydroxyethyl, hydroxy and methyl to methoxy, or the repositioning of a phenolic or alcoholic hydroxy group to create a hydroxyamine. Examples of rearran- gements resulting in compounds that would be posi- tional isomers, include, but are not limited to, tert-butyl to sec-butyl, methoxy and ethyl to isopropoxy, N,N- diethyl to N-methyl-N-propyl, or alpha-methylamino to N-methylamino.
Positional isomer means any substance that possesses