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2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane, 3,9-bis(phenylmethyl)-, 3,9-dioxide

CAS 20544-37-0

EPA and Census publish no US supply data for this chemical.

Molecular structure of 20544-37-0
US productionNot reported
Top sourceNo public record

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

Where It Comes From

EPA and Census publish no US supply data for this chemical.

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Chemical Identity

CAS20544-37-0
PubChem CIDNot recorded
DTXSIDDTXSID9066623
FormulaC19H22O6P2
Mol. Weight408.327 g/mol
SMILESO=P1(CC2=CC=CC=C2)OCC2(CO1)COP(=O)(CC1=CC=CC=C1)OC2

Data Sources

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Brief citations

2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane, 3,9-bis(phenylmethyl)-, 3,9-dioxide (CAS 20544-37-0) https://chemicalindependence.com/chemical/20544-37-0/ EPA TSCA Inventory: CAS 20544-37-0. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory