189308-08-5 Danshenol A Phenanthro(1,2-b)furan-11(2H)-one, 1,10-dihydro-10-hydroxy-1,6-dimethyl-10-(2-oxopropyl)-, (1R,10S)- Phenanthro(1,2-b)furan-11(2H)-one, 1,10-dihydro-10-hydroxy-1,6-dimethyl-10-(2-oxopropyl)-, (1R-trans)-