SMILES: O[PH+]=O
Description: The molecule is a phosphorus oxoacid that consists of a single pentavalent phosphorus covalently bound via single bonds to two hydrogens and a hydroxy group and via a double bond to an oxygen. The parent of the class of phosphinic acids. It has a role as an antioxidant. It is a phosphorus oxoacid and a member of phosphinic acids. It is a conjugate acid of a phosphinate.