(+) Tubocurarine 57-94-3 (CHLORIDE) 57-95-4 6989-98-6 (CHLORIDE PENTAHYDRATE) 7',12'-Dihydroxy-6,6'-dimethoxy-2,2',2'-trimethyltubocuraranium AIDS-002682 AIDS002682 Delacurarine Isoquinoline alkaloid Jexin Tubarine