ID 1.3.1.47 DE alpha-santonin 1,2-reductase. CA (1) 1,2-dihydro-alpha-santonin + NAD(+) = alpha-santonin + NADH + H(+). CA (2) 1,2-dihydro-alpha-santonin + NADP(+) = alpha-santonin + NADPH + H(+). //