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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicological information

Skin sensitisation

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Administrative data

Endpoint:
skin sensitisation: in vivo (LLNA)
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with limited documentation / justification
Justification for type of information:
QSAR prediction

Data source

Reference
Reference Type:
other: QSAR prediction
Title:
Unnamed
Year:
2022
Report date:
2022

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: REACH Guidance on QSARs R.6 May/July 2008

Test material

Constituent 1
Chemical structure
Reference substance name:
Ethyl 4-(bromomethyl)-2-[(2,6-difluorophenyl)methyl-ethoxycarbonylamino]-5-(4-nitrophenyl)thiophene-3-carboxylate
Cas Number:
308831-95-0
Molecular formula:
C24H21BrF2N2O6S
IUPAC Name:
Ethyl 4-(bromomethyl)-2-[(2,6-difluorophenyl)methyl-ethoxycarbonylamino]-5-(4-nitrophenyl)thiophene-3-carboxylate
Test material form:
solid: particulate/powder

Results and discussion

In vivo (LLNA)

Results
Parameter:
other: Skin sensitisation II (ECETOC)
Remarks on result:
positive indication of skin sensitisation based on QSAR/QSPR prediction

Applicant's summary and conclusion

Interpretation of results:
Category 1 (skin sensitising) based on GHS criteria
Conclusions:
According to (Q)SAR model using QSAR Toolbox 4.5 Ethyl 4-(bromomethyl)-2-[(2,6-difluorophenyl)methyl-ethoxycarbonylamino]-5-(4-nitrophenyl)thiophene-3-carboxylate is skin sensitizer.