Synonyms: 1-Azaspiro[5.5]undecan-8-ol,7-(1-buten-3-ynyl)-2-(4-pentynyl)-, [6R-[6a(R*),7b(Z),8a]]-; 1-Azaspiro[5.5]undecan-8-ol,7-[(1Z)-1-buten-3-ynyl]-2-(4-pentynyl)-, (2R,6R,7R,8R)- (9CI);(-)-Histrionicotoxin 285C; Allodihydrohistrionicotoxin; HTX 285C;Histrionicotoxin 285C; Histrionicotoxin, allodihydro-; l-Allo-H2-HTX;l-Allodihydrohistrionicotoxin