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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
supporting study
Study period:
1992
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment
Remarks:
Summary report signed by the study director of the original study, and the head of Regulatory genetic Toxicology. No reference is made to GLP. All strains required by guideline OECD 471 tested. The report format does not give all informations required by the guideline: Experimental details and individual data are not provided.

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
1992
Report date:
1992

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 471 (Bacterial Reverse Mutation Assay)
Version / remarks:
Not explicitly stated
Deviations:
not specified
GLP compliance:
not specified
Type of assay:
bacterial reverse mutation assay

Test material

Constituent 1
Reference substance name:
Benzeneacetic acid, 2-[(6-chloro-4-pyrimidinyl)oxy]-α-(methoxymethylene)-, methyl ester, (αE)-
IUPAC Name:
Benzeneacetic acid, 2-[(6-chloro-4-pyrimidinyl)oxy]-α-(methoxymethylene)-, methyl ester, (αE)-
Constituent 2
Chemical structure
Reference substance name:
603-525-9
EC Number:
603-525-9
Cas Number:
131860-97-4
Molecular formula:
C15H13ClN2O4
IUPAC Name:
603-525-9

Method

Target gene:
Not stated, probably hisD3052, hisG46, hisG428 (paQ1), hisC3076
(from choice of bacterial strains)
Species / strainopen allclose all
Species / strain / cell type:
S. typhimurium TA 1535, TA 1537, TA 98 and TA 100
Additional strain / cell type characteristics:
not specified
Species / strain / cell type:
E. coli WP2
Additional strain / cell type characteristics:
other: WP2P
Species / strain / cell type:
E. coli WP2 uvr A
Additional strain / cell type characteristics:
other: WP2PuvrA
Metabolic activation:
with and without
Metabolic activation system:
S9, not further specified
Test concentrations with justification for top dose:
not stated
Vehicle / solvent:
not stated
Controls
Untreated negative controls:
not specified
Negative solvent / vehicle controls:
not specified
True negative controls:
not specified
Positive controls:
not specified
Positive control substance:
not specified
Details on test system and experimental conditions:
Plate incorporation test: on all strains, with and without metabolic activation
Preincubation test: only with strains TA98 and TA100, with metabolic activation only
Evaluation criteria:
Not specified
Statistics:
No data

Results and discussion

Test resultsopen allclose all
Species / strain:
S. typhimurium TA 1535, TA 1537, TA 98 and TA 100
Metabolic activation:
with and without
Genotoxicity:
negative
Cytotoxicity / choice of top concentrations:
not specified
Vehicle controls validity:
not specified
Untreated negative controls validity:
not specified
Positive controls validity:
not specified
Species / strain:
E. coli WP2
Metabolic activation:
with and without
Genotoxicity:
negative
Cytotoxicity / choice of top concentrations:
not specified
Vehicle controls validity:
not specified
Untreated negative controls validity:
not specified
Positive controls validity:
not specified
Species / strain:
E. coli WP2 uvr A
Metabolic activation:
with and without
Genotoxicity:
negative
Cytotoxicity / choice of top concentrations:
not specified
Vehicle controls validity:
not specified
Untreated negative controls validity:
not specified
Positive controls validity:
not specified
Remarks on result:
other: all strains/cell types tested
Remarks:
Migrated from field 'Test system'. Remarks: Plate incorporation test: all strains; preincubation test: only strains TA98 and TA100 (+ S9)

Applicant's summary and conclusion

Conclusions:
Interpretation of results: negative