(R)-pantoate + NADP(+) = 2-dehydropantoate + NADPH + H(+)
(r)-pantoate + nadp(+) = 2-dehydropantoate + nadph + h(+)
(R)-pantoate + NADP(+) = 2-dehydropantoate + NADPH + H(+)
(r)-pantoate + nadp(+) = 2-dehydropantoate + nadph + h(+)