(R)-pantolactone + NADP(+) => 2-dehydropantolactone + NADPH + H(+)
(r)-pantolactone + nadp(+) => 2-dehydropantolactone + nadph + h(+)
(R)-pantolactone + NADP(+) => 2-dehydropantolactone + NADPH + H(+)
(r)-pantolactone + nadp(+) => 2-dehydropantolactone + nadph + h(+)