Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 257-885-3 | CAS number: 52372-39-1
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Endpoint summary
Administrative data
Key value for chemical safety assessment
Genetic toxicity in vitro
Description of key information
Genetic mutation in vitro;
The read across substances share high similarity in structure and functional group .Therefore, it is acceptable to derive information on mutation from the analogue substance for test substance. Experimental data from read across chemical have been reviewed to determine the mutagenic nature of3-(diethylamino)-7-imino-7H-chromeno[3',2':3,4] pyrido[1,2-a] benzimidazole-6-carbonitrile (52372-39-1).The studies are as mentioned below
The read across substances share high similarity in functional group .Therefore, it is acceptable to derive information on mutation from the analogue substance for test substance. Genetic toxicity in vitro for test chemical was assessed for its possible mutagenic potential .For this purpose Salmonella-microsome assay was performed on Salmonella typhimurium strainTA1535, TA1537 and TA1538,using test substance concentration of 0-1000µg/plate (4.44µmol/plate).The test substance was exposed to the Salmonella typhimurium strainTA1535, TA1537 and TA1538 in the presence and absence of metabolic activation system.S9 mix, Adult male Sprague-Dawley rats (200- 250 g) pre-treated with Aroclor 1254 (500 mg/kg) were used to obtain liver for the metabolic activation system. The strains were checked periodically for relevant genetic markers and for rfa by crystal violet sensitivity. Each experiment included solvent controls as well as known direct-acting mutagens and a mutagen that required metabolic activation. No mutagenic effects were observed during the study. Therefore test chemical was considered to be non mutagenic in Salmonella typhimurium strainTA1535, TA1537 and TA1538 by AMES assay. Hence it cannot be classified as gene mutant in vitro.
The read across substances share high similarity in functional group .Therefore, it is acceptable to derive information on mutation from the analogue substance for target substance. The Salmonella/mammalian microsome test was performed to determine the mutagenic nature of test chemical in vitro. Preincubation assay was performed using Salmonella typhimurium TA100, TA1535, TA1537, TA98 with and without S9 metabolic activation system. To select the dose range for the mutagenesis assay, the test chemicals were checked for toxicity to TA100 up to a concentration of 10 mg/plate or the limit of solubility, both in the presence and absence of S-9 mix. The doses thus selected were 0, 100, 333, 1000, 3333, 5450 µg/plate. Appropriate positive controls were also incorporated in the study. Test chemical is not mutagenic to Salmonella typhimurium TA100, TA1535, TA1537, TA98 in the preincubation assay performed with and without S9 metabolic activation system and hence does not classify as a gene mutant in vitro.
The data available for the target chemical based on its read across substance and applying weight of evidence 3-(diethylamino)-7-imino-7H-chromeno[3',2':3,4]pyrido [1,2-a]benzimidazole -6-carbonitrile (52372-39-1)does not exhibit gene mutation in vitro. Hence the test chemical is not likely to classify as a gene mutant in vitro.
Link to relevant study records
- Endpoint:
- in vitro gene mutation study in bacteria
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Justification for type of information:
- Data for the target chemical is summarized based on the structurally similar read across chemicals
- Reason / purpose for cross-reference:
- read-across source
- Reason / purpose for cross-reference:
- read-across source
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 471 (Bacterial Reverse Mutation Assay)
- Principles of method if other than guideline:
- WoE derived based on the experimental data from structurally and functionally similar read across chemicals for the target chemical.
- GLP compliance:
- no
- Type of assay:
- bacterial reverse mutation assay
- Specific details on test material used for the study:
- Name: 3-(diethylamino)-7-imino-7H-chromeno[3',2':3,4]pyrido[1,2-a]benzimidazole-6-carbonitrile
InChI:1S/C23H19N5O/c1-3-27(4-2)15-10-9-14-11-16-21(29-20(14)12-15)17(13-24)22(25)28-19-8-6-5-7-18(19)26-23(16)28/h5-12,25H,3-4H2,1-2H3
Smiles:c12cc3c4nc5ccccc5n4c(=N)c(C#N)c3oc1cc(N(CC)CC)cc2
Molecular Formula: C23H19N5O
Molecular Weight: 381.437 g/mole - Target gene:
- Histidine
- Species / strain / cell type:
- S. typhimurium, other: TA1535, TA1537 and TA1538
- Details on mammalian cell type (if applicable):
- Not applicable.
- Additional strain / cell type characteristics:
- not specified
- Species / strain / cell type:
- S. typhimurium, other: TA1535, TA1537, TA98, and TA100
- Details on mammalian cell type (if applicable):
- Not applicable
- Additional strain / cell type characteristics:
- not specified
- Cytokinesis block (if used):
- not specified
- Metabolic activation:
- with and without
- Metabolic activation system:
- S9 mix, Adult male Sprague-Dawley rats (200- 250 g) pretreated with Aroclor 1254 (500 mg/kg) were used to obtain liver for the metabolic activation system
- Test concentrations with justification for top dose:
- 1.0-1000µg/plate (4.44µ/mol)
2,0.0,100.0,333.0,1000.0,3333.0,5450 µg/plate - Vehicle / solvent:
- 1.Not specified
2,DMSO - Untreated negative controls:
- not specified
- Negative solvent / vehicle controls:
- not specified
- True negative controls:
- not specified
- Positive controls:
- yes
- Remarks:
- Details not available
- Untreated negative controls:
- yes
- Remarks:
- , (choline chloride, glycerol, glycine, mannitol, and sodium phosphate)
- Negative solvent / vehicle controls:
- yes
- Remarks:
- DMSO
- True negative controls:
- not specified
- Positive controls:
- yes
- Positive control substance:
- other: NOPD: 4-nitro+-phenylenediamine 2-AA :2-aminoanthracene SA: sodium azide 9AAD: 9-aminoacridine
- Details on test system and experimental conditions:
- 1,Details on test system and conditions
METHOD OF APPLICATION: in agar (plate incorporation)
DURATION
- Exposure duration: 24 hour
Other: The strains were checked periodically for relevant genetic markers and for rfa by crystal violet sensitivity.
2,Details on test system and conditions
METHOD OF APPLICATION: Preincubation method
DURATION
- Pre incubation period: for 20 min
- Exposure duration: No data available
- Expression time (cells in growth medium): 48 hrs
- Selection time (if incubation with a selection agent): No data available
- Fixation time (start of exposure up to fixation or harvest of cells): No data available
SELECTION AGENT (mutation assays): No data available
SPINDLE INHIBITOR (cytogenetic assays): No data available
STAIN (for cytogenetic assays): No data available
NUMBER OF REPLICATIONS:
NUMBER OF CELLS EVALUATED: 0.05 ml of cells
DETERMINATION OF CYTOTOXICITY
- Method: mitotic index; cloning efficiency; relative total growth; other: No data available
OTHER EXAMINATIONS:
- Determination of polyploidy: No data available
- Determination of endoreplication: No data available
- Other: No data available
OTHER: No data available - Rationale for test conditions:
- Not specified
- Evaluation criteria:
- 1,The numbers of histidine-independent revertants for each S. typhimurium strain were taken from the linear portion of dose-response curves after the background was subtracted. The range of spontaneous revertants was 25-55 for TA1535 and 7-25 for TA1537. A positive response was defined as a reproducible, dose-related increase in the
2,numbers of his+ revertants in all strains - Statistics:
- 1,Not specified.
2,The data were evaluated using an analysis based on the models presented by Margolin et al - Species / strain:
- S. typhimurium, other: TA1535, TA1537 and TA1538
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- not specified
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- not specified
- Positive controls validity:
- valid
- Species / strain:
- S. typhimurium, other: TA1535, TA1537, TA98, and TA100
- 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: No mutagenic effect were observed
- Conclusions:
- Gene mutation toxicity study for 3-(diethylamino)-7-imino-7H-chromeno[3',2':3,4]pyrido[1,2-a]benzimidazole-6-carbonitrile (52372-39-1)as predicted using data from read across chemicals for Salmonella typhimurium bacterial strains in the presence and absence of S9 metabolic activation system is negative and hence the chemical is not likely to classify as a gene mutant in vitro.
- Executive summary:
Genetic mutation in vitro;
The read across substances share high similarity in structure and functional group .Therefore, it is acceptable to derive information on mutation from the analogue substance for test substance. Experimental data from read across chemical have been reviewed to determine the mutagenic nature of3-(diethylamino)-7-imino-7H-chromeno[3',2':3,4] pyrido[1,2-a] benzimidazole-6-carbonitrile (52372-39-1).The studies are as mentioned below
The read across substances share high similarity in functional group .Therefore, it is acceptable to derive information on mutation from the analogue substance for test substance. Genetic toxicity in vitro for test chemical was assessed for its possible mutagenic potential .For this purpose Salmonella-microsome assay was performed on Salmonella typhimurium strainTA1535, TA1537 and TA1538,using test substance concentration of 0-1000µg/plate (4.44µmol/plate).The test substance was exposed to the Salmonella typhimurium strainTA1535, TA1537 and TA1538 in the presence and absence of metabolic activation system.S9 mix, Adult male Sprague-Dawley rats (200- 250 g) pre-treated with Aroclor 1254 (500 mg/kg) were used to obtain liver for the metabolic activation system. The strains were checked periodically for relevant genetic markers and for rfa by crystal violet sensitivity. Each experiment included solvent controls as well as known direct-acting mutagens and a mutagen that required metabolic activation. No mutagenic effects were observed during the study. Therefore test chemical was considered to be non mutagenic in Salmonella typhimurium strainTA1535, TA1537 and TA1538 by AMES assay. Hence it cannot be classified as gene mutant in vitro.
The read across substances share high similarity in functional group .Therefore, it is acceptable to derive information on mutation from the analogue substance for target substance. The Salmonella/mammalian microsome test was performed to determine the mutagenic nature of test chemical in vitro. Preincubation assay was performed using Salmonella typhimurium TA100, TA1535, TA1537, TA98 with and without S9 metabolic activation system. To select the dose range for the mutagenesis assay, the test chemicals were checked for toxicity to TA100 up to a concentration of 10 mg/plate or the limit of solubility, both in the presence and absence of S-9 mix. The doses thus selected were 0, 100, 333, 1000, 3333, 5450 µg/plate. Appropriate positive controls were also incorporated in the study. Test chemical is not mutagenic to Salmonella typhimurium TA100, TA1535, TA1537, TA98 in the preincubation assay performed with and without S9 metabolic activation system and hence does not classify as a gene mutant in vitro.
The data available for the target chemical based on its read across substance and applying weight of evidence 3-(diethylamino)-7-imino-7H-chromeno[3',2':3,4]pyrido [1,2-a]benzimidazole -6-carbonitrile (52372-39-1)does not exhibit gene mutation in vitro. Hence the test chemical is not likely to classify as a gene mutant in vitro.
Reference
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (negative)
Genetic toxicity in vivo
Endpoint conclusion
- Endpoint conclusion:
- no study available
Additional information
Genetic mutation in vitro;
The read across substances share high similarity in structure and functional group .Therefore, it is acceptable to derive information on mutation from the analogue substance for test substance. Experimental data from read across chemical have been reviewed to determine the mutagenic nature of3-(diethylamino)-7-imino-7H-chromeno[3',2':3,4] pyrido[1,2-a] benzimidazole-6-carbonitrile (52372-39-1).The studies are as mentioned below
The read across substances share high similarity in functional group .Therefore, it is acceptable to derive information on mutation from the analogue substance for test substance. Genetic toxicity in vitro for test chemical was assessed for its possible mutagenic potential .For this purpose Salmonella-microsome assay was performed on Salmonella typhimurium strainTA1535, TA1537 and TA1538,using test substance concentration of 0-1000µg/plate (4.44µmol/plate).The test substance was exposed to the Salmonella typhimurium strainTA1535, TA1537 and TA1538 in the presence and absence of metabolic activation system.S9 mix, Adult male Sprague-Dawley rats (200- 250 g) pre-treated with Aroclor 1254 (500 mg/kg) were used to obtain liver for the metabolic activation system. The strains were checked periodically for relevant genetic markers and for rfa by crystal violet sensitivity. Each experiment included solvent controls as well as known direct-acting mutagens and a mutagen that required metabolic activation. No mutagenic effects were observed during the study. Therefore test chemical was considered to be non mutagenic in Salmonella typhimurium strainTA1535, TA1537 and TA1538 by AMES assay. Hence it cannot be classified as gene mutant in vitro.
The read across substances share high similarity in functional group .Therefore, it is acceptable to derive information on mutation from the analogue substance for target substance. The Salmonella/mammalian microsome test was performed to determine the mutagenic nature of test chemical in vitro. Preincubation assay was performed using Salmonella typhimurium TA100, TA1535, TA1537, TA98 with and without S9 metabolic activation system. To select the dose range for the mutagenesis assay, the test chemicals were checked for toxicity to TA100 up to a concentration of 10 mg/plate or the limit of solubility, both in the presence and absence of S-9 mix. The doses thus selected were 0, 100, 333, 1000, 3333, 5450 µg/plate. Appropriate positive controls were also incorporated in the study. Test chemical is not mutagenic to Salmonella typhimurium TA100, TA1535, TA1537, TA98 in the preincubation assay performed with and without S9 metabolic activation system and hence does not classify as a gene mutant in vitro.
The data available for the target chemical based on its read across substance and applying weight of evidence 3-(diethylamino)-7-imino-7H-chromeno[3',2':3,4]pyrido [1,2-a]benzimidazole -6-carbonitrile (52372-39-1)does not exhibit gene mutation in vitro. Hence the test chemical is not likely to classify as a gene mutant in vitro.
Justification for classification or non-classification
Thus based on the above annotation and CLP criteria for target substance 3-(diethylamino)-7-imino-7H-chromeno[3',2':3,4]pyrido[1,2-a]benzimidazole-6-carbonitrile (52372-39-1)does not exhibit gene mutation in vitro. Hence the test chemical is not likely to classify as a gene mutant in vitro.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.