4-Demethylgriseofulvin 4-Desmethylgriseofulvin 5128-41-6 Desmethylgriseofulvin Spiro(benzofuran-2(3H),1'-(2)cyclohexene)-3,4'-dione, 7-chloro-4-hydroxy-2',6-dimethoxy-6'-methyl-, (1'S-trans)-