Baycol (cerivastatin) is a cholesterol-lowering drug that was withdrawn from the market due to its association with serious side effects, including rhabdomyolysis.

Baycol does not have stereoisomers.

This is because its chemical structure lacks chiral centers. A chiral center is an atom that is bonded to four different groups.

Here's why Baycol lacks chiral centers:

* The molecule contains only one ring system. This ring system does not have any carbon atoms that are bonded to four different groups.

* The functional groups attached to the ring are not chiral. Groups like the carboxylic acid, the ketone, and the furan ring are not chiral.

Therefore, Baycol exists as a single enantiomer and does not have any stereoisomers.