Synonyms: 5b-Bufa-20,22-dienolide, 1b,3b,5,14,19-pentahydroxy-, cyclic 1,3,5-orthoacetate19-acetate (8CI); Orthoacetic acid, cyclic 1,3,5-ester with 1b,3b,5,14,19-pentahydroxy-5b-bufa-20,22-dienolide 19-acetate (8CI); BufadienolideB; Melianthusigenin