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EC number: 201-303-2 | CAS number: 80-71-7
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:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 471 (Bacterial Reverse Mutation Assay)
- GLP compliance:
- yes (incl. QA statement)
- Type of assay:
- bacterial reverse mutation assay
Test material
- Reference substance name:
- 2-hydroxy-3-methylcyclopent-2-enone
- EC Number:
- 201-303-2
- EC Name:
- 2-hydroxy-3-methylcyclopent-2-enone
- Cas Number:
- 80-71-7
- Molecular formula:
- C6H8O2
- IUPAC Name:
- 2-hydroxy-3-methylcyclopent-2-en-1-one
Constituent 1
- Specific details on test material used for the study:
- The following information concerning identity and composition of the test item was pro-vided by the sponsor.
Name Methyl Cyclopentenolone
Batch no. D270001706002
Appearance white, crystal powder
Composition Methyl Cyclopentenolone
Purity >99.0%
Homogeneity homogeneous
Expiry date 07. Jun. 2018
Storage Room Temperature (20 ± 5°C)
The following additional information was relevant to the conduct of the study, according to
OECD 471:
CAS No. 80-71-7
EINECS-No. 201-303-2
Stability H2O: unknown; EtOH: unknown; acetone: unknown; CH3CN: unknown; DMSO: unknown
Solubility H2O: < 0,1 g/L; EtOH: >1 g/L; acetone: >1 g/L; CH3CN: >1 g/l; DMSO: >1 g/l
Method
Species / strain
- Species / strain / cell type:
- other: TA97a TA98 TA100 TA102 TA1535
- Test concentrations with justification for top dose:
- 5000 µg/plate
- Vehicle / solvent:
- Acetone
Controls
- Negative solvent / vehicle controls:
- yes
- Positive controls:
- yes
- Details on test system and experimental conditions:
- All Salmonella typhimurium strains were obtained from TRINOVA BioChem GmbH (batch: TA97a: 4997D, TA98: 5011D, TA100: 4996D, TA102: 4982D, TA1535: 5012D) and were stored as lyophilizates in the refrigerator at 2-8 °C.
The lyophilizates were used to prepare permanent cultures which were filled into vials and stored at < - 75 °C.
Eight hours before the start of each experiment, an aliquot of a permanent culture per strain to be used was taken from the deep freezer to inoculate a culture vessel containing nutrient broth. After incubation overnight for eight hours at 37 ± 1 °C, the cultures were used in the experiment. During the test, the cultures were stored at room temperature as to prevent changes in the titre.
Results and discussion
Test results
- Key result
- Species / strain:
- other: TA97a, TA98, TA100, TA102 and TA1535
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
Applicant's summary and conclusion
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