Raphanuside, chemically known as (2S,4aS,6R,7S,8S,8aR)-2-(4-hydroxy-3,5-dimethoxyphenyl)-6-(hydroxymethyl)-3,4a,6,7,8,8a-hexahydro-2H-pyrano[3,2-b][1,4]oxathiine-7,8-diol, is a naturally occurring glycoside isolated from radish (Raphanus sativus) seeds. It features a complex polycyclic structure combining a pyran ring fused with an oxathiine ring, substituted with a hydroxymethyl group and two hydroxyl groups at positions 7 and 8, as well as a 4-hydroxy-3,5-dimethoxyphenyl moiety at position 2.