Racemic (1SR,2SR,7aRS)-1,2,7a-trihydr­oxy-2-methyl­perhydro-1-phosphaindene 1-oxide monohydrate

In the title racemic compound, C₉H₁₉O₅P, all inter­atomic C—C and C—OH distances can be considered normal. The P—O and P=O distances are 1.5583 (8) and 1.5003 (7) Å, respectively. The rings are cis-fused, the phospho­lane ring exists in a slightly distorted envelope conformation and the cyclo­hexane ring adopts an almost ideal chair conformation. All hydroxyl groups are anti to the P=O bond. Mol­ecules are linked via medium-strength inter­molecular O—H...O hydrogen bonds into a three-dimensional network.