11-Methyl-20,21-dinoreburnamenine 123828-80-8 20,21-Dinoreburnamenine, 11-methyl-, (3alpha)-(+-)- 20,21-Dinoreburnamenine, 11-methyl-, (3alpha)-(.+-.)- RU 49041 RU 52582 RU 52583 RU-49041