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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
acute toxicity: oral
Type of information:
experimental study
Adequacy of study:
key study
Study period:
July 1997
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1997
Report date:
1997

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 423 (Acute Oral toxicity - Acute Toxic Class Method)
Version / remarks:
1996-03-22
GLP compliance:
yes
Test type:
acute toxic class method
Limit test:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
5,6 beta-Epoxy-7 beta-hydroxy-15 beta,16 beta-methylene-3 beta-pivaloyloxy-5 beta-androstan-17-one
EC Number:
617-351-6
Cas Number:
82544-13-6
Molecular formula:
C25 H36 O5
IUPAC Name:
5,6 beta-Epoxy-7 beta-hydroxy-15 beta,16 beta-methylene-3 beta-pivaloyloxy-5 beta-androstan-17-one

Test animals

Species:
rat
Strain:
Wistar
Sex:
male/female

Administration / exposure

Route of administration:
oral: gavage
Doses:
2000 mg/kg
No. of animals per sex per dose:
3
Control animals:
no

Results and discussion

Effect levels
Key result
Sex:
male/female
Dose descriptor:
LD50
Effect level:
> 2 000 mg/kg bw
Based on:
test mat.

Any other information on results incl. tables

No compound-related findings were observed in neither clinical observation nor body weight gain nor autopsy.

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
The test item is of low acute oral toxicity.
Executive summary:

The single oral administration of the test substance (ZK 90346) to male and female rats at a dose of 2000 mg/kg was tolerated without any mortality or compound-related clinical or macroscopic pathological signs. The acute oral toxicity of Methylenepoxidpivalat in rats is therefore above 2000 mg/kg body weight.