CAS: 7783-00-8 Molecular Formula: H2O3Se Molecular Weight (g/mol): 128.98 MDL Number: MFCD00011331 InChI Key: MCAHWIHFGHIESP-UHFFFAOYSA-N Synonym: selenious acid,selenious acid h2seo3,monohydrated selenium dioxide,unii-f6a27p4q4r,selenium dioxide, monohydrated,ccris 5530,selenious acid usp,selenious acid,selenous acid,monohydrated selenium dioxide,selenium, reference standard solution PubChem CID: 1091 ChEBI: CHEBI:26642 IUPAC Name: selenous acid SMILES: O[Se](O)=O