Question

The absolute configuration at the two chiral centres in D- ribulose are

• A. $3R,4R$
• B. $3R,4S$
• C. $3S,4R$
• D. $3S,4S$

Answer 1

The correct option is A $3R,4R$


Applying the priority rules,we get the absolute configuration as $3R,4R$.