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EC number: 213-709-7 | CAS number: 1003-52-7
Acute Toxicity: oral
Administrative data
- Endpoint:
- acute toxicity: oral
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 10/ 2000 - 02/ 2001
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: study performed according to GLP and OECD guidelines
Cross-referenceopen allclose all
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 001
- Report date:
- 2001
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 401 (Acute Oral Toxicity)
- Deviations:
- no
- Principles of method if other than guideline:
- -
- GLP compliance:
- yes (incl. QA statement)
- Test type:
- acute toxic class method
- Limit test:
- no
Test material
- Reference substance name:
- 4-methyloxazole-5-carbonitrile
- EC Number:
- 213-709-7
- EC Name:
- 4-methyloxazole-5-carbonitrile
- Cas Number:
- 1003-52-7
- Molecular formula:
- C5H4N2O
- IUPAC Name:
- 4-methyl-1,3-oxazole-5-carbonitrile
Constituent 1
Test animals
- Species:
- rat
- Strain:
- Sprague-Dawley
- Sex:
- male/female
Administration / exposure
- Route of administration:
- oral: gavage
- Vehicle:
- unchanged (no vehicle)
- Doses:
- 2000, 930, 430, 200 mg/kg BW
- No. of animals per sex per dose:
- 5 per sex per dose
- Control animals:
- no
Results and discussion
Effect levelsopen allclose all
- Sex:
- male
- Dose descriptor:
- LD50
- Effect level:
- 735 mg/kg bw
- 95% CL:
- >= 452 - <= 1 199
- Sex:
- female
- Dose descriptor:
- LD50
- Effect level:
- 632 mL/kg bw
- 95% CL:
- >= 267 - <= 1 500
Any other information on results incl. tables
no additional remarks
Applicant's summary and conclusion
- Interpretation of results:
- harmful
- Remarks:
- Migrated information Criteria used for interpretation of results: EU
- Conclusions:
- The LD50 value of Cyanomethyloxazol was determined to 735.87 mg/kg for male rats and to 632.46 mg/kg for female rats according to the Moving Averages Computation.
- Executive summary:
The test substance was administered orally in a single dose to four groups of Sprague Dawley rats: Group I (l0 rats, 5 males and 5 females) 2000 mg/kg applied; Group II (l0 rats, 5 males and 5 females) 930 mg/kg applied Group III (10 rats, 5 males and 5 females) 430 mg/kg applied Group IV (10 rats, 5 males and 5 females) 200 mg/kg applied. Mortality attributed to the exposure to Cyanomethyloxazol could be observed in 10 rats dosed with 2000 mg/kg, in 8 rats dosed with 930 mg/kg, in 1 rat dosed with 430 mg/kg and in 0 rats dosed with 200 mg/kg. The post-mortem findings did not show any macroscopic organ changes. The LD50 value of Cyanomethyloxazol was determined to 735.87 mg/kg for male rats and to 632.46 mg/kg for female rats according to the Moving Averages Computation.
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