Registration Dossier
Registration Dossier
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EC number: 601-498-8 | CAS number: 117899-42-0
Genetic toxicity: in vitro
Administrative data
- Endpoint:
- in vitro gene mutation study in bacteria
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 015
- Report date:
- 2015
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 471 (Bacterial Reverse Mutation Assay)
- Deviations:
- not specified
- GLP compliance:
- yes (incl. QA statement)
- Type of assay:
- bacterial reverse mutation assay
Test material
- Reference substance name:
- rel-(4aR,5aS,6aS,6bS,9R,9aS,11S,11aS,11bR)-9a,11b-dimethyl-9-(2-methyl-1,3-dioxolan-2-yl)tetradecahydrospiro[cyclopenta[1,2]phenanthro[8a,9-b]oxirene-3,2'-[1,3]dioxolane]-9,11-diol
- EC Number:
- 601-498-8
- Cas Number:
- 117899-42-0
- Molecular formula:
- C25H38O7
- IUPAC Name:
- rel-(4aR,5aS,6aS,6bS,9R,9aS,11S,11aS,11bR)-9a,11b-dimethyl-9-(2-methyl-1,3-dioxolan-2-yl)tetradecahydrospiro[cyclopenta[1,2]phenanthro[8a,9-b]oxirene-3,2'-[1,3]dioxolane]-9,11-diol
Constituent 1
Method
Species / strain
- Species / strain / cell type:
- S. typhimurium TA 1535, TA 1537, TA 98, TA 100 and TA 102
- Metabolic activation:
- with and without
- Metabolic activation system:
- S9 Mix
- Test concentrations with justification for top dose:
- All the tester strains were performed in the absence and in the presence of S-9, using plate incorporation method at final concentrations of Hydralfoxy 5, 16, 50, 160, 500, 1600 and 5000 μg/plate
Controls
- Untreated negative controls:
- yes
- Positive controls:
- yes
- Positive control substance:
- 2-nitrofluorene
- sodium azide
- benzo(a)pyrene
- mitomycin C
- other: 2-aminoanthracene
Results and discussion
Test resultsopen allclose all
- Key result
- Species / strain:
- S. typhimurium TA 1535
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- not specified
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- valid
- Positive controls validity:
- valid
- Key result
- Species / strain:
- S. typhimurium TA 1537
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- not specified
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- valid
- Positive controls validity:
- valid
- Key result
- Species / strain:
- S. typhimurium TA 98
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- not specified
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- valid
- Positive controls validity:
- valid
- Key result
- Species / strain:
- S. typhimurium TA 100
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- not specified
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- valid
- Positive controls validity:
- valid
- Key result
- Species / strain:
- S. typhimurium TA 102
- 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
Applicant's summary and conclusion
- Conclusions:
- Hydralfoxy did not induce mutation in five histidine-requiring strains (TA98, TA100, TA1535, TA1537 and TA102) of Salmonella typhimurium when tested under the conditions of this study. These conditions included treatments using plate incorporation method at concentrations up to 5000 μg/plate, in the absence and in the presence of a rat liver metabolic activation system (S-9).
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