Answer Posted / akash
The R S notation of isomers were introduced by robert
cahen, vladimir prelog.
It is more useful for defining the asymmetry of
biomolecules because it accounts for all asymmetric carbons
in an isomer.
if any atom or group on the asymmetric carbon is on the
right side that asymmetric carbon is called as "R"(Rectus)
if any atom or group is on the left side the asymmetric
carbon is designated as "S"(sinister).
isoleucine will have 4 stereo isomers.
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