Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicological information

Repeated dose toxicity: oral

Currently viewing:

Administrative data

Endpoint:
repeated dose toxicity: oral
Adequacy of study:
other information

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: Annex V, B7
GLP compliance:
yes
Limit test:
yes

Test animals

Species:
other: Rat (Wistar)

Administration / exposure

Route of administration:
oral: unspecified
Vehicle:
other: 1% aqueous caboxymethyl cellulose
Details on oral exposure:
Method of administration:
Gavage
Duration of treatment / exposure:
Test duration: 28 days
Frequency of treatment:
Dosing regime: 7 days/week
No. of animals per sex per dose:
Male: 5 animals at 25 mg/kg bw/day
Male: 5 animals at 250 mg/kg bw/day
Male: 5 animals at 1000 mg/kg bw/day
Female: 5 animals at 25 mg/kg bw/day
Female: 5 animals at 250 mg/kg bw/day
Female: 5 animals at 1000 mg/kg bw/day

Results and discussion

Results of examinations

Details on results:
Clinical observations:
At a dose level of 1000mg Lactam 204,636/kg/day there were
no compound-related clinical changes and no effects on
bodyweight or food consumption.

Laboratory findings:
At a dose level of 1000mg Lactam 204,636/kg/day there were
minimal changes in some clinical chemistry parameters,
namely an increase in creatinine and plasma glucose.

At a dose level of 250mg Lactam 204,636/kg/day there was a
minimal reduction in plasma cholesterol.

Effects in organs:
At a dose level of 1000mg Lactam 204,636/kg/day there was a
slight reduction in brain and spleen weights (of
approximately 15 and 5% respectively). There were no
compound-related changes in macroscopic or microscopic
histopathology.

Effect levels

open allclose all
Dose descriptor:
NOAEL
Effect level:
1 000 mg/kg bw/day (nominal)
Basis for effect level:
other: original NCD unit is mg/kg/day.
Dose descriptor:
NOEL
Effect level:
25 mg/kg bw/day (nominal)
Basis for effect level:
other: original NCD unit is mg/kg/day.

Target system / organ toxicity

Critical effects observed:
not specified

Applicant's summary and conclusion

Conclusions:
Classified as: Not classified