Which of the following will not show optical activity
$Cl-CH=C=CH-Cl$
$Br-CH=C=CH-Br$
Optical activity of an enantiomeric mixture is $+12.6^{\circ}$ and the specific rotation of $(t)$ isomer is $+30^{\circ}$. The optical purity is $........\%$
The $S$ - enantiomer of ibuprofen is responsible for its pain-relieving properties.Which one of the following structures shown below is $(S)$ -ibuprofen ?
Stereoisomer possible for following compound
What is the maximum number of stereoisomers possible for discodermolide ?