Allegra, a common prescription drug with the structure shown below., is given for treatment of seasonal allergies. How many stereogenic carbon does Allegra possess?
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Solution
1 stereogenic carbon does Allegra possess because as it is clearly visible in the above molecular structure that at the extreme right C is not attatched to 4 different group (their are 2CH3) but their is a carbon in the middle with an OH, H and 2 different sides