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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
other information
Study period:
Sep to Oct 2000
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: well reported Guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2001
Report date:
2001

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 423 (Acute Oral toxicity - Acute Toxic Class Method)
Test type:
acute toxic class method
Limit test:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
5-Cyano-11 alpha-hydroxy-3,5'-dioxo-4 beta,5',6,7 beta-tetrahydrocyclopenta[4,5,6,7]-5 beta,17 alpha-pregnane-21,17-carbolactone
EC Number:
606-280-6
Cas Number:
192704-54-4
Molecular formula:
C24 H29 N O5
IUPAC Name:
5-Cyano-11 alpha-hydroxy-3,5'-dioxo-4 beta,5',6,7 beta-tetrahydrocyclopenta[4,5,6,7]-5 beta,17 alpha-pregnane-21,17-carbolactone
Details on test material:
- Name of test material (as cited in study report): ZK 233744
- Batch No.: 1366
- Purity: 92.3%

Test animals

Species:
rat
Strain:
Wistar
Sex:
male/female

Administration / exposure

Route of administration:
oral: gavage
Vehicle:
other: physiol. saline + Myrj 53 in bidest.water
Doses:
2000 mg/kg (application volume 10 mL/kg)
No. of animals per sex per dose:
3
Control animals:
no

Results and discussion

Effect levels
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 animal died in the course of the study. No compound-related clinical signs, effects on body weight or abnormalities at necropsy were observed.

Applicant's summary and conclusion

Executive summary:

The single oral administration of the test substance (ZK 233744) to male and female rats at a dose of 2000 mg/kg was tolerated without any mortality. No compound-related clinical signs or effects on body weight were observed and there were no macroscopic pathological signs.

The acute oral toxicity of Diketon in rats is therefore above 2000 mg/kg body weight.