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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
in vitro gene mutation study in bacteria
Remarks:
Type of genotoxicity: gene mutation
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP study according EU/OECD guideline.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2003

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method B.13/14 (Mutagenicity - Reverse Mutation Test Using Bacteria)
GLP compliance:
yes (incl. QA statement)
Type of assay:
bacterial reverse mutation assay

Test material

Constituent 1
Chemical structure
Reference substance name:
ethyl 1-{[2-(2,4,6-trimethylphenyl)acetyl]oxy}cyclopentane-1-carboxylate
EC Number:
609-205-5
Cas Number:
361366-15-6
Molecular formula:
C19H26O4
IUPAC Name:
ethyl 1-{[2-(2,4,6-trimethylphenyl)acetyl]oxy}cyclopentane-1-carboxylate

Method

Species / strain
Species / strain / cell type:
S. typhimurium, other: TA 1535, TA 100, TA 1537, TA 98 and TA 102
Metabolic activation:
with and without
Metabolic activation system:
S9 mix of Aroclor 1254 induced rats
Test concentrations with justification for top dose:
16, 50, 158, 500, 1581, 5000 µg/plate
Controls
Untreated negative controls:
yes
Negative solvent / vehicle controls:
yes
True negative controls:
no
Positive controls:
yes
Positive control substance:
other: sodium azide, nitrofurantoin, 4-nitro-1,2-phenylene diamine, mitomycin C, cumene hydroperoxide, 2-aminoanthracene

Results and discussion

Test results
Species / strain:
S. typhimurium, other: TA 1535, TA 100, TA 1537, TA 98 and TA 102
Metabolic activation:
with and without
Genotoxicity:
negative
Cytotoxicity / choice of top concentrations:
cytotoxicity
Remarks:
> 1581 ug per plate
Vehicle controls validity:
valid
Untreated negative controls validity:
not applicable
Positive controls validity:
valid
Remarks on result:
other: all strains/cell types tested
Remarks:
Migrated from field 'Test system'.

Any other information on results incl. tables

-

Applicant's summary and conclusion

Conclusions:
Interpretation of results (migrated information):
negative