2-BUTENOIC ACID, 3-METHYL-, 1-(1,4-DIHYDRO-5,8-DIHYDROXY-1,4-DIOXO-2-NAPHTHALENY 2-Butenoic acid, 3-methyl-, (1R)-1-(1,4-dihydro-5,8-dihydroxy-1,4-dioxo-2-naphthalenyl)-4-methyl-3-pentenyl ester 2-Butenoic acid, 3-methyl-, 1-(1,4-dihydro-5,8-dihydroxy-1,4-dioxo-2-naphthalenyl)-4-methyl-3-pentenyl ester, (+)- 2-Butenoic acid, 3-methyl-, 1-(1,4-dihydro-5,8-dihydroxy-1,4-dioxo-2-naphthalenyl)-4-methyl-3-pentenyl ester, (R)- 24502-79-2 Dmask Isoarnebin I Shikonin beta,beta-dimethylacrylate beta,beta-Dimethylacrylshikonin