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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
dissociation constant
Type of information:
(Q)SAR
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: A recognised calculation method was used.
Cross-reference
Reason / purpose for cross-reference:
reference to other study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2005
Report date:
2005

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
The dissociation constant of the test substance was estimated by an atom/fragment contribution method using the software PALLAS© Version 3.1.2.4, pKa Prediction Module 5.1 (CompuDrug International Inc., San Francisco, USA). The pKa for the test substance are 2.3 and 3.1 ( basic groups).
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
457-660-1
EC Name:
-
Cas Number:
104797-47-9
Molecular formula:
C14H10N4O3S3 (Hill formula) C14H10N4O3S3 (CAS Formula)
IUPAC Name:
(Z)-[1-(2-amino-1,3-thiazol-4-yl)-2-(1,3-benzothiazol-2-ylsulfanyl)-2-oxoethylidene]amino acetate

Results and discussion

Dissociation constantopen allclose all

Applicant's summary and conclusion

Conclusions:
The 2 pKa for the test substance are 2.3 and 3.1 ( basic groups).
Executive summary:

The dissociation constant of the test substance was estimated by an atom/fragment contribution method using the software PALLAS© Version 3.1.2.4, pKa Prediction Module 5.1.

The 2 pKa for the test substance are 2.3 and 3.1 ( basic groups).