octamethylcyclotetrasiloxane

Synonyms: "oktamethylcyklotetrasiloxan", "cyclic dimethylsiloxane tetramer", "OMCTS", "union carbide 7207"

Source: octamethylcyclotetrasiloxane is used in cosmetic products.

Identifiers:

IUPAC Name: 2,2,4,4,6,6,8,8-octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
CAS Number: 556-67-2
PubChem ID: 11169
InChiKey: HMMGMWAXVFQUOA-UHFFFAOYSA-N
Canonical SMILES: C[Si]1(O[Si](O[Si](O[Si](O1)(C)C)(C)C)(C)C)C

Structural Properties:

Molecular Formula: C8H24O4Si4
Molecular Weight: 296,6158

Pharmacophore Features:

Number of bond donors: 0
Number of bond acceptors: 4
Number of atoms different from hydrogen: 16

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2D structure (.sdf)
3D structure (.sdf)
3D structure (.mol2)
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3D structure (.pdbqt)

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Toxicological Information

ACToR (Aggregated Computational Toxicology Resource)

HSDB (Hazardous Substances Data Bank)

CCRIS (Chemical Carcinogenesis Research Information System)

CTD (Comparative Toxicogenomics Database)

Evidence Supporting This Chemical as an Endocrine Disruptor
TEDX List of Potential Endocrine Disruptors


McKim JM Jr., Wilga PC, Breslin WJ, Plotzke KP, Gallavan RH, Meeks RG. 2001. Potential estrogenic and antiestrogenic activity of the cyclic siloxane octamethylcyclotetrasiloxane (D4) and the linear siloxane hexamethyldisiloxane (HMDS) in immature rats using the uterotrophic assay. Toxicol Sci 63(1):37-46.

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