Preferred Label : erythro structures;
Detailed label : erythro structures in a polymer;
IUPAC definition : The relative configuration at two contiguous carbon atoms in the main chain bearing,
respectively, substituents a and b (a b), is designated by the prefix i erythro
/i or i threo /i , as appropriate, by analogy with the terminology for carbohydrate
systems in which the substituents are OH. Examples: Similar systems in which a higher
level of substitution exists may be treated analogously if the i erythro /i or
i threo /i designation is employed to denote the relative placements of those two
substituents, one for each backbone carbon atom, which rank highest according to the
Sequence Rule.;
Origin ID : E02211;
See also
The relative configuration at two contiguous carbon atoms in the main chain bearing,
respectively, substituents a and b (a b), is designated by the prefix i erythro
/i or i threo /i , as appropriate, by analogy with the terminology for carbohydrate
systems in which the substituents are OH. Examples: Similar systems in which a higher
level of substitution exists may be treated analogously if the i erythro /i or
i threo /i designation is employed to denote the relative placements of those two
substituents, one for each backbone carbon atom, which rank highest according to the
Sequence Rule.
