How many chiral center (excluding $N$ centres) are there in morphine.?
$4$
$5$
$6$
More than $6$
Total number of optically active compounds from the following is. . . . . .
A naturally occurring substance has the constitution shown below. How many may have this constitution ?
Calculate enantiomeric excees of mixture containing $6g$ of $( +) - 2$ -butanol and $4g$ of $(-) - 2$ -butanol........$\%$
Which of the following compounds is chiral ?
Indicate whether each of the following pairs are identical, or ?
$I$ || $II$ || $III$