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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Toxicological information

Specific investigations: other studies

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
endocrine system modulation
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
year of publication: 2009
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Qualifier:
equivalent or similar to guideline
Guideline:
other: Estrogen Receptor Binding Assay Using Rat Uterine Cytosol (OSCPP 890.1250)
Version / remarks:
guideline was not implemented at the time of experiment, however experiment contributed to guideline setup
GLP compliance:
not specified
Type of method:
in vitro
Endpoint addressed:
other: estrogen receptor binding
Species:
rat
Strain:
Sprague-Dawley
Remarks:
estrogen receptors from Rat Uterine Cytosol (RUC) preparations
Sex:
female
Details on results:
The submission substance was part of EPAs Safer Chemicals Research, including the ToxCast and Tox21 high-throughput toxicology efforts. As part of these initiatives the submission substance was one of many chemicals tested in a Estrogen Receptor Binding Assay Using Rat Uterine Cytosol (ER-RUC).
The result reported for the submission subtance is 'inactive', this either means that 'no binding was observed when tested to the concentration limit of 100uM, or some binding was observed in initial screening but secondary analysis confirmed non-binder status'.
Conclusions:
The submission substance was inactive in the Estrogen Receptor Binding Assay Using Rat Uterine Cytosol (ER-RUC; i.e. no binding to the estrogen receptor will occur).

Description of key information

The submission substance was inactive in the Estrogen Receptor Binding Assay Using Rat Uterine Cytosol (ER-RUC; i.e. no binding to the estrogen receptor will occur).

Additional information

The submission substance was part of EPAs Safer Chemicals Research, including the ToxCast and Tox21 high-throughput toxicology efforts. As part of these initiatives the submission substance was

one of many chemicals tested in an Estrogen Receptor Binding Assay Using Rat Uterine Cytosol (ER-RUC).

Principles of the test:

In the experimental study, the relative binding affinities (RBAs) were determined by the ability of the natural ligand, to bind to the estrogen receptors in a rat tissue preparation in the presence of increasing amounts of the test chemical. It simulates the initiating step of a process that results in estrogen receptor mediated physiological responses. Chemicals that are active in this assay may have tissue dependent agonist and/or antagonist properties. Measuring the response as a function of the concentration of the test chemical allows true binders to be separated from chemicals that interfere with the binding of the natural ligand through other mechanisms.