Registration Dossier

Diss Factsheets

Administrative data

Endpoint:
in vivo mammalian somatic cell study: cytogenicity / erythrocyte micronucleus
Remarks:
Type of genotoxicity: chromosome aberration
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1994
Report date:
1994

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EU Method B.12 (Mutagenicity - In Vivo Mammalian Erythrocyte Micronucleus Test)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 474 (Mammalian Erythrocyte Micronucleus Test)
Deviations:
no
GLP compliance:
yes
Type of assay:
micronucleus assay

Test material

Constituent 1
Chemical structure
Reference substance name:
A mixture of: cis-tetrahydro-2-isobutyl-4-methylpyran-4-ol; trans-tetrahydro-2-isobutyl-4-methylpyran-4-ol
EC Number:
405-040-6
EC Name:
A mixture of: cis-tetrahydro-2-isobutyl-4-methylpyran-4-ol; trans-tetrahydro-2-isobutyl-4-methylpyran-4-ol
Cas Number:
63500-71-0
Molecular formula:
C10 H20 O2
IUPAC Name:
A mixture of: cis-tetrahydro-2-isobutyl-4-methylpyran-4-ol; trans-tetrahydro-2-isobutyl-4-methylpyran-4-ol
Details on test material:
- Analytical purity: >99%
- Lot/batch No.: S2066301
- Storage condition of test material: 4 °C in the dark

Test animals

Species:
mouse
Strain:
CD-1
Sex:
male/female

Administration / exposure

Route of administration:
oral: gavage
Vehicle:
- Vehicle: aqueous 1 % methylcellulose
Duration of treatment / exposure:
single gavage
Post exposure period:
24 hours + 48 hours (for negative control and high dose)
Doses / concentrations
Remarks:
Doses / Concentrations:
150, 300, 600 mg/kg bodyweight
Basis:
actual ingested
No. of animals per sex per dose:
five
Control animals:
yes, concurrent vehicle
Positive control(s):
mitomycin C (12 mg/kg bodyweight)

Examinations

Tissues and cell types examined:
bone marrow smears from femur

Results and discussion

Test results
Sex:
male/female
Genotoxicity:
negative
Toxicity:
no effects
Vehicle controls validity:
valid
Negative controls validity:
valid
Positive controls validity:
valid

Applicant's summary and conclusion

Conclusions:
Interpretation of results (migrated information): negative
no evidence of causing chromosome damage