Registration Dossier
Registration Dossier
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EC number: 421-300-1 | CAS number: 138564-59-7
Water solubility
Administrative data
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1996-03-26 to 1996-06-30
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 996
- Report date:
- 1996
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- flask method
Test material
- Reference substance name:
- -
- EC Number:
- 421-300-1
- EC Name:
- -
- Cas Number:
- 138564-59-7
- Molecular formula:
- C12H9N3O2S
- IUPAC Name:
- 5-methyl-2-[(2-nitrophenyl)amino]thiophene-3-carbonitrile
- Test material form:
- solid: particulate/powder
- Details on test material:
- 97.7%
Item code QA405K
Lilly lot no: 356MO1
Constituent 1
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: Sponsor and 356M01
- Expiration date of the lot/batch: 1997-01-04
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: At room temperature in the dark
Results and discussion
Water solubilityopen allclose all
- Water solubility:
- 1.397 other: ug/ml
- Conc. based on:
- test mat.
- Incubation duration:
- 3 d
- Temp.:
- 20 °C
- pH:
- ca. 6.04
- Remarks on result:
- other: test substance in water
- Water solubility:
- 1.496 other: ug/ml
- Conc. based on:
- test mat.
- Incubation duration:
- 3 d
- Temp.:
- 20 °C
- pH:
- ca. 4
- Water solubility:
- 1.427 other: ug/ml
- Conc. based on:
- test mat.
- Incubation duration:
- 3 d
- Temp.:
- 20 °C
- pH:
- ca. 7
- Water solubility:
- 1.404 other: ug/ml
- Conc. based on:
- test mat.
- Incubation duration:
- 3 d
- Temp.:
- 20 °C
- pH:
- ca. 9
- Details on results:
- The solubility of the test substance was (mean± standard deviation) 1.3974 ± 0.0292 µg/ml, 1.4957 ± 0.0417 µg/ml, l.4274 ± 0.0449 µg/ml, and 1.4044 ± 0.0302 µg/ml for water, and for pH 4, 7, and 9 buffers, respectively.The values reported reflect the mean and standard deviation of all data collected for each treatment; this is three incubation intervals (A,B and C) triplicate samples at each sampling interval (1,2 and 3) and triplicate injections of each by HPLC (N=27). The pH of the saturated solutions ranged between 5.88-6.35, 3.85-3.87, 7.00-7.03 and 9.09-9.14 for water, and for pH 4, 7 and 9 buffers, respectively, when measured at each sampling interval.
Applicant's summary and conclusion
- Conclusions:
- This study validly assesed the solubility in water at variuos pH levels according to the specified guideline. The solubility of the test substance was (mean± standard deviation) 1.3974 ± 0.0292 µg/ml, 1.4957 ± 0.0417 µg/ml, l.4274 ± 0.0449 µg/ml, and 1.4044 ± 0.0302 µg/ml for water, and for pH 4, 7, and 9 buffers, respectively.
- Executive summary:
The study was carried out in accordance with EU method A.6 and the results are highlighted in the conclusions above.
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