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EC number: 700-778-8 | CAS number: 1064076-86-3
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Genetic toxicity: in vitro
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
- Study period:
- 02-Jan-2012 to 09-feb-2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: The study has been performed according to OECD and/or EC guidelines and according to GLP principles.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 012
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 471 (Bacterial Reverse Mutation Assay)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.13/14 (Mutagenicity - Reverse Mutation Test Using Bacteria)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of assay:
- bacterial reverse mutation assay
Test material
- Reference substance name:
- N-cyclohexylcyclohexanaminium (2S)-4-fluoro-4-methyl-2-{[(1S)-2,2,2-trifluoro-1-{4'-methanesulfonyl-[1,1'-biphenyl]-4-yl}ethyl]amino}pentanoate
- EC Number:
- 700-778-8
- Cas Number:
- 1064076-86-3
- Molecular formula:
- C21H23F4NO4S.C12H23N
- IUPAC Name:
- N-cyclohexylcyclohexanaminium (2S)-4-fluoro-4-methyl-2-{[(1S)-2,2,2-trifluoro-1-{4'-methanesulfonyl-[1,1'-biphenyl]-4-yl}ethyl]amino}pentanoate
- Details on test material:
- - Name of test material (as cited in study report): Biphenyl DCHA Salt
- Substance type: White powder
- Physical state: Solid
- Storage condition of test material: At room temperature protected from light in desiccator
Constituent 1
Method
- Target gene:
- - S. typhimurium: Histidine gene
- E. coli: Tryptophan gene
- Metabolic activation:
- with and without
- Metabolic activation system:
- Rat liver S9-mix induced by a combination of phenobarbital and ß-naphthoflavone
- Test concentrations with justification for top dose:
- Experiment 1
Preliminary test (without and with S9) TA100 and WP2uvrA: 3, 10, 33, 100, 333, 1000, 3330 and 5000 µg/plate
Main study: TA1535, TA97 and TA98:
Without and with S9-mix: 10, 33, 100, 333 and 1000 µg/plate
Experiment 2:
Without and with S9-mix: 10, 33, 100, 333 and 1000 µg/plate - Vehicle / solvent:
- - Vehicle(s)/solvent(s) used: DMSO
- Justification for choice of solvent/vehicle:
A homogeneous suspension could be obtained in DMSO and DMSO is accepted and approved by authorities and international guidelines
Controlsopen allclose all
- Untreated negative controls:
- no
- Negative solvent / vehicle controls:
- yes
- Positive controls:
- yes
- Positive control substance:
- methylmethanesulfonate
- Remarks:
- without S9
Migrated to IUCLID6: 650 µg/plate in DMSO for TA100
- Positive control substance:
- 2-nitrofluorene
- Remarks:
- without S9
Migrated to IUCLID6: 10 µg/plate in DMSO for TA98
- Positive control substance:
- other: ICR-191: 1 µg/plate in DMSO for TA97
- Positive control substance:
- 4-nitroquinoline-N-oxide
- Remarks:
- without S9
Migrated to IUCLID6: 10 µg/plate in DMSO for WP2uvrA
- Positive control substance:
- sodium azide
- Remarks:
- without S9
Migrated to IUCLID6: 5 µg/plate in saline for TA1535
- Positive control substance:
- other: 2-aminoanthracene in DMSO for all tester strains
- Remarks:
- with S9
- Details on test system and experimental conditions:
- METHOD OF APPLICATION: in agar (plate incorporation)
DURATION
- Exposure duration: 48 hour
NUMBER OF REPLICATIONS:
- Doses of the test substance were tested in triplicate in each strain. Two independent experiments were conducted.
NUMBER OF CELLS EVALUATED: 10E8 per plate
DETERMINATION OF CYTOTOXICITY
- Method: The reduction of the bacterial background lawn, the increase in the size of the microcolonies and the reduction of the revertant colonies.
OTHER EXAMINATIONS:
- The presence of precipitation of the test compound on the plates was determined. - Evaluation criteria:
- A test substance is considered negative (not mutagenic) in the test if:
a) The total number of revertants in tester strain TA97 and TA100 is not greater than two (2) times the concurrent control, and the total number of revertants in tester strains TA1535, TA98 or WP2uvrA is not greater than three (3) times the concurrent control.
b) The negative response should be reproducible in at least one independently repeated experiment.
A test substance is considered positive if:
a) A two-fold (TA97 and TA100) or more or a three-fold (TA1535, TA98, WP2uvrA) or more increase above solvent control in the mean number of revertant colonies is observed in the test substance group.
b) In case a repeat experiment is performed when a positive response is observed in one of the tester strains, the positive response should be reproducible in at least one independently repeated experiment.
Results and discussion
Test resultsopen allclose all
- Species / strain:
- other: TA1535, TA97, TA98, TA100
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity, but tested up to precipitating concentrations
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
- Species / strain:
- E. coli WP2 uvr A
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity, but tested up to precipitating concentrations
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
- Additional information on results:
- TEST-SPECIFIC CONFOUNDING FACTORS
- Precipitation:
DRF: Slight precipitation was observed at dose levels of 1000 µg/plate and above
Mutation experiment 1: Slight precipitation was observed at the dose level of 1000 µg/plate
Mutation experiment 2: Slight precipitation was observed at the dose level of 1000 µg/plate, except in the tester strains TA1535, TA98 and WP2uvrA (absence of S9-mix) where no precipitation of Biphenyl DCHA Salt was observed
RANGE-FINDING/SCREENING STUDIES:
- No toxicity or mutagenicity was observed up to and including the top dose of 5000 µg/plate
COMPARISON WITH HISTORICAL CONTROL DATA:
- The negative and strain-specific positive control values were within our laboratory historical control data ranges indicating that the test conditions were adequate and that the metabolic activation system functioned properly.
ADDITIONAL INFORMATION ON CYTOTOXICITY:
- Toxicity was only observed at tester strain TA97 in the absence of S9-mix in the first experiment.
Any other information on results incl. tables
In the second experiment, no dose level with precipitate or toxicity was tested in the tester strains TA1535, TA98 and WP2uvrA in the absence of S9-mix. Since in the dose range finding test, precipitate was observed at 1000 µg/plate, this dose level was selected as top dose in the mutation experiments. Although the dose level of 1000 µg/plate showed no toxicity or precipitate in these three tester strains, clear negative responses over the entire dose range was observed. Furthermore in the first experiment and the other tester strains in experiment 2, no increase in the number of revertants was observed up to the precipitating dose level of 1000µg/plate, therefore the testing of a top dose level of 3330 µg/plate in these tester strains in the second experiment would have given limited additional information.
Applicant's summary and conclusion
- Conclusions:
- Interpretation of results (migrated information):
negative
Biphenyl DCHA Salt is not mutagenic in the Salmonella typhimurium reverse mutation assay and in the Escherichia coli reverse mutation assay - Executive summary:
Biphenyl DCHA Salt did not induce a significant dose-related increase in the number of revertant (His+) colonies in each of the four tester strains (TA1535, TA97, TA98 and TA100) and in the number of revertant (Trp+) colonies in tester strain WP2uvrA both in the absence and presence of S9-metabolic activation. These results were confirmed in an independently repeated experiment.
In this study, the negative and strain-specific positive control values were within the laboratory historical control data ranges indicating that the test conditions were adequate and that the metabolic activation system functioned properly.
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