The molecule is a diastereoisomeric mixture containing sennoside A and sennoside B that is used as a laxative and cathartic. Its components are found in senna (Senna alexandrina, also known as Cassia angustifolia), where sennoside A and sennoside B are present in equal amounts, and in rhubarbs (Rheum rhabarbarum), where sennoside A predominates. It has a role as a laxative and a cathartic. It contains a sennoside A and a sennoside B.
9-[2-carboxy-4-hydroxy-10-oxo-5-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-9H-anthracen-9-yl]-4-hydroxy-10-oxo-5-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-9H-anthracene-2-carboxylic acid