The term prochiral is used for a compound or group that has two enantiotopic atoms or groups, for example, CX2WY. That atom or group X that would lead to an R compound if preferred to the other is called pro-(R). The other is pro-(S); for example,
The term prochiral is used for a compound or group that has twoenantiotopic atoms or groups, for example, CX2WY. That atom or group Xthat would lead to an R compound if preferred to the other is called pro-(R).The other is pro-(S); for example,