Out of the following, the alkene that exhibits optical isomerism is
$3-$ methyl $-2-$ pentene
$4-$ methyl $-1-$ pentene
$3-$ methyl $-1-$ pentene
$2-$ methyl $-2-$ pentene
A naturally occurring substance has the constitution shown below. How many may have this constitution ?
The structure of $(S)-2$ -fluorobutane is best represented by
When isomers have the same structural formula but different in relative arrangement of atoms or groups are called ........
The $S$ - enantiomer of ibuprofen is responsible for its pain-relieving properties.Which one of the following structures shown below is $(S)$ -ibuprofen ?
On bromination, propionic acid yields two isomeric $2-$bromopropionic acids. This pair is an important example of