60142-17-8 8-Isoquinolinol, 7-(4,5-dimethoxy-2-methyl-1-naphthalenyl)-1,2,3,4-tetrahydro-1,3-dimethyl-, (1R,3R,7S)- 8-Isoquinolinol, 7-(4,5-dimethoxy-2-methyl-1-naphthalenyl)-1,2,3,4-tetrahydro-1,3-dimethyl-, stereoisomer Dioncophylline A