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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Genetic toxicity: in vitro

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Administrative data

Endpoint:
in vitro gene mutation study in bacteria
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with limited documentation / justification
Justification for type of information:
(Q)SAR prediction

Data source

Reference
Reference Type:
other: (Q)SAR prediction
Title:
Unnamed
Year:
2022
Report date:
2022

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: REACH guidance on QSARs R.6., May/July 2008
GLP compliance:
not specified
Type of assay:
bacterial reverse mutation assay

Test material

Constituent 1
Chemical structure
Reference substance name:
Ethyl 2-[[(2,6-difluorophenyl)methyl](ethoxycarbonyl)amino]-4-methyl-5-(4-nitrophenyl)-3-thiophenecarboxylate
EC Number:
840-148-0
Cas Number:
308831-94-9
Molecular formula:
C24H22F2N2O6S
IUPAC Name:
Ethyl 2-[[(2,6-difluorophenyl)methyl](ethoxycarbonyl)amino]-4-methyl-5-(4-nitrophenyl)-3-thiophenecarboxylate
Test material form:
solid: particulate/powder

Method

Species / strain
Species / strain / cell type:
S. typhimurium TA 1535, TA 1537, TA 98 and TA 100
Remarks:
(Q)SAR prediction
Metabolic activation:
not specified

Results and discussion

Test resultsopen allclose all
Species / strain:
S. typhimurium TA 1535
Remarks:
(Q)SAR prediction
Metabolic activation:
not specified
Genotoxicity:
negative
Cytotoxicity / choice of top concentrations:
not specified
Species / strain:
S. typhimurium TA 1537
Remarks:
(Q)SAR prediction
Metabolic activation:
not specified
Genotoxicity:
negative
Cytotoxicity / choice of top concentrations:
not specified
Species / strain:
S. typhimurium TA 98
Remarks:
(Q)SAR prediction
Metabolic activation:
not specified
Genotoxicity:
negative
Cytotoxicity / choice of top concentrations:
not specified
Species / strain:
S. typhimurium TA 100
Remarks:
(Q)SAR prediction
Metabolic activation:
not specified
Genotoxicity:
negative
Cytotoxicity / choice of top concentrations:
not specified
Remarks on result:
no mutagenic potential (based on QSAR/QSPR prediction)

Applicant's summary and conclusion

Conclusions:
According to predictions made using QSAR Toolbox 4.5. SP1, Ethyl 2-[[(2,6-difluorophenyl)methyl](ethoxycarbonyl)amino]-4-methyl-5-(4-nitrophenyl)-3-thiophenecarboxylate has no mutagenic potential.