How many asymmetric centers are present in the open chain form of the aldohexose D-(-)-gulose?

Question

Quizplus · Accepted Answer

D-(-)-gulose is an aldohexose, meaning it is a six-carbon sugar with an aldehyde group at one end. In its open-chain form, it has four carbon atoms (other than the carbonyl carbon and the terminal CH2OH group) that can each be a center of chirality (asymmetric center), as each of these carbons is bonded to four different groups.

How Many Asymmetric Centers Are Present in the Open Chain