(3-aminophenyl)uronium chloride

Endpoint summary

Key value for chemical safety assessment

Genetic toxicity in vitro

Description of key information

3-aminophenyl)uronium chloride is not expected to cause genetic toxicity to bacteria Salmonella typhimurium species. Ambigous results are obtained in chromosomal abberation studies using Chinese Hamster Ovary (CHO)

Link to relevant study records

Reference

Endpoint:

in vitro gene mutation study in bacteria

Remarks:

Type of genotoxicity: gene mutation

Type of information:

(Q)SAR

Adequacy of study:

weight of evidence

Reliability:

2 (reliable with restrictions)

Justification for type of information:

QSAR prediction: migrated from IUCLID 5.6

Qualifier:

according to guideline

Guideline:

other: Estimated data

Principles of method if other than guideline:

The prediction is done by using QSAR Toolbox Version 3.1

GLP compliance:

no

Type of assay:

bacterial reverse mutation assay

Species / strain / cell type:

S. typhimurium TA 1535

Additional strain / cell type characteristics:

not specified

Metabolic activation:

with

Species / strain:

S. typhimurium TA 1535

Metabolic activation:

with

Genotoxicity:

negative

Cytotoxicity / choice of top concentrations:

not specified

Vehicle controls validity:

not specified

Untreated negative controls validity:

not specified

Positive controls validity:

not specified

Remarks on result:

other: all strains/cell types tested

Remarks:

Migrated from field 'Test system'.

The prediction was based on dataset comprised from the following descriptors: "Gene mutation"
Estimation method: Takes highest mode value from the 6 nearest neighbours
Domain  logical expression:Result: In Domain

((((("a" and ("b" and ( not "c") )  )  and ("d" and ( not "e") )  )  and ("f" and ( not "g") )  )  and ("h" and ( not "i") )  )  and ("j" and "k" )  )

Domain logical expression index: "a"

Referential boundary: The target chemical should be classified as Aromatic amines by Skin irritation/corrosion Inclusion rules by BfR

Domain logical expression index: "b"

Referential boundary: The target chemical should be classified as Radical AND Radical >> ROS formation after GSH depletion AND Radical >> ROS formation after GSH depletion >> Aromatic and Heterocyclic Primary Amines AND SN1 AND SN1 >> Nitrenium ion formation AND SN1 >> Nitrenium ion formation >> Aromatic and Heterocyclic Primary Amines by DNA binding by OASIS v.1.1

Domain logical expression index: "c"

Referential boundary: The target chemical should be classified as Michael addition OR Michael addition >> Quinone type compounds OR Michael addition >> Quinone type compounds >> Quinoneimine Derivatives OR Michael addition >> Quinone type compounds >> Quinones OR No alert found OR Radical >> Generation of reactive oxygen species OR Radical >> Generation of reactive oxygen species >> Coumarins OR Radical >> Generation of reactive oxygen species >> Thiols OR Radical >> Radical mechanism by ROS formation OR Radical >> Radical mechanism by ROS formation >> Nitro Compounds OR Radical >> Radical mechanism by ROS formation >> Nitroso compounds OR Radical >> Radical mechanism by ROS formation >> Quinones OR Radical >> Radical mechanism by ROS formation >> Specific Imine and Thione Derivatives OR Radical >> ROS formation after GSH depletion >> Quinoneimine Derivatives OR SN1 >> Carbenium ion formation OR SN1 >> Carbenium ion formation >> Nitroso compounds OR SN1 >> Carbenium ion formation >> Polycyclic Aromatic Hydrocarbons OR SN1 >> Glutathione-induced nitrenium ion formation OR SN1 >> Glutathione-induced nitrenium ion formation >> Nitroso compounds OR SN1 >> Nitrenium ion formation >> Nitro Compounds OR SN1 >> Non-enzymatic nitroso radical and/or nirtosonium cation formation OR SN1 >> Non-enzymatic nitroso radical and/or nirtosonium cation formation >> Nitroso compounds OR SN2 OR SN2 >> Diazonium ion formation OR SN2 >> Diazonium ion formation >> Specific Imine and Thione Derivatives OR SN2 >> P450-mediated epoxidation OR SN2 >> P450-mediated epoxidation >> Coumarins OR SN2 >> P450-mediated epoxidation >> Polycyclic Aromatic Hydrocarbons by DNA binding by OASIS v.1.1

Domain logical expression index: "d"

Referential boundary: The target chemical should be classified as SN1 AND SN1 >> Nitrenium Ion formation AND SN1 >> Nitrenium Ion formation >> Primary aromatic amine by DNA binding by OECD

Domain logical expression index: "e"

Referential boundary: The target chemical should be classified as Michael addition OR Michael addition >> P450 Mediated Activation to Quinones and Quinone-type Chemicals OR Michael addition >> P450 Mediated Activation to Quinones and Quinone-type Chemicals >> Alkyl phenols OR Michael addition >> P450 Mediated Activation to Quinones and Quinone-type Chemicals >> Arenes OR Michael addition >> P450 Mediated Activation to Quinones and Quinone-type Chemicals >> Hydroquinones OR Michael addition >> P450 Mediated Activation to Quinones and Quinone-type Chemicals >> Polycyclic (PAHs) and heterocyclic (HACs) aromatic hydrocarbons-Michael addition OR No alert found OR SN1 >> Nitrenium Ion formation >> Aromatic azo OR SN1 >> Nitrenium Ion formation >> Tertiary aromatic amine by DNA binding by OECD

Domain logical expression index: "f"

Referential boundary: The target chemical should be classified as Not possible to classify according to these rules by DPRA Cysteine peptide depletion

Domain logical expression index: "g"

Referential boundary: The target chemical should be classified as High reactive OR High reactive >> Isothiazolinone derivatives OR Low reactive OR Low reactive >> N-substituted aromatic amides by DPRA Cysteine peptide depletion

Domain logical expression index: "h"

Referential boundary: The target chemical should be classified as Moderate binder, NH2 group by Estrogen Receptor Binding

Domain logical expression index: "i"

Referential boundary: The target chemical should be classified as Moderate binder, OH grooup OR Non binder, MW>500 OR Strong binder, NH2 group OR Strong binder, OH group OR Weak binder, NH2 group OR Weak binder, OH group by Estrogen Receptor Binding

Domain logical expression index: "j"

Parametric boundary:The target chemical should have a value of logP Multicase which is >= -0.724

Domain logical expression index: "k"

Parametric boundary:The target chemical should have a value of logP Multicase which is <= 2.87

Conclusions:

Interpretation of results (migrated information):
negative with metabolic activation

Based on the prediction for in-vitro bacterial reverse mutation assay test on Salmonella typhimurium strain TA 1535 with S9 metabolic activation it was estimated that (3-aminophenyl)uronium chloride does not exhibit positive gene mutation effect.

Executive summary:

Based on the prediction for in-vitro bacterial reverse mutation assay test on Salmonella typhimurium strain TA 1535 with S9 metabolic activation it was estimated that (3-aminophenyl)uronium chloride does not exhibit positive gene mutation effect.

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed (negative)

Additional information

Additional information from genetic toxicity in vitro:

The available data indicates that the chemical 3-aminophenyl)uronium chloride is not expected to cause genetic toxicity to bacteria Salmonella typhimurium species. The summary of the data used in the weight of evidence apparaoch is presented below

S. No	Species	Effect	Source
1	S. typhimurium TA 1535	Negative gene mutation	QSAR
2	Chinese hamster Ovary (CHO)	Ambiguous	Danish EPA

Justification for selection of genetic toxicity endpoint
Model considered relaible by OECD

Justification for classification or non-classification

Based on the available data, the chemical 3-aminophenyl)uronium chloride is not calssified as a genetic toxicant.