4alpha-Hydroperoxy-5-ethyl-3,8,10-trimethylisoalloxazine 94099-56-6 Benzo(g)pteridine-2,4(3H,4aH)-dione, 5-ethyl-5,10-dihydro-4a-hydroperoxy-3,8,10-trimethyl-, (3beta,5beta)- Fletooh