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EC number: 424-660-8 | CAS number: -
- 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
Repeated dose toxicity: oral
Administrative data
- Endpoint:
- sub-chronic toxicity: oral
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- May - June 1996
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: done under GLP and OECD method
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 996
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.7 (Repeated Dose (28 Days) Toxicity (Oral))
- Version / remarks:
- Subacute Toxicity (oral)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 407 (Repeated Dose 28-Day Oral Toxicity Study in Rodents)
- Qualifier:
- according to guideline
- Guideline:
- other: Japanese Ministry of International Trade and Industry Notification Nr.2
- GLP compliance:
- yes
- Limit test:
- no
Test material
- Reference substance name:
- -
- EC Number:
- 424-660-8
- EC Name:
- -
- Cas Number:
- 224631-15-6
- Molecular formula:
- Hill formula: C18H26N4O5S CAS formula: C18H26N4O5S
- IUPAC Name:
- 2,5-dioxopyrrolidin-1-yl (2S)-3-methyl-2-{[methyl({[2-(propan-2-yl)-1,3-thiazol-4-yl]methyl})carbamoyl]amino}butanoate
Constituent 1
Test animals
- Species:
- rat
- Strain:
- other: Crl:CD®BR
- Sex:
- male/female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Source: Charles River Laboratories, Raleigh, Nth. Carolina
- Age at study initiation: approx. 6 weeks
- Weight at study initiation: 144 - 254g. Recovery rats in the 150g/kg/day dosage group weighed 175 - 378g at their delayed start of treatment.
- Housing: ventilated, hanging stainless steel, wire bottomed cages.
- Diet: Certified Rodent Chow, ad libitum
- Water: ad libitum
- Acclimation period: 14 days ( 6 days followed by 8 days pretreatment). 28 days for the 150k/kg/day recovery group.
ENVIRONMENTAL CONDITIONS
- Temperature (°F): 71±6
- Humidity (%): ambient
- Photoperiod (hrs dark / hrs light):12/12
Administration / exposure
- Route of administration:
- oral: gavage
- Vehicle:
- corn oil
- Details on oral exposure:
- Method of administration:
Gavage - Analytical verification of doses or concentrations:
- yes
- Details on analytical verification of doses or concentrations:
- Samples of the dosing formulations were sent for assay analysis in weeks 1 and 4 of the test period. All dosage formulations were within ±6% of the intended concentrations at all time points.
At the end of the treatment period a sample of the bulk test article was sent for analysis to verify stability over the treatment period. - Duration of treatment / exposure:
- Test duration: 28 - 42 days
- Frequency of treatment:
- Dosing regime: 7 days/week
Doses / concentrationsopen allclose all
- Remarks:
- Doses / Concentrations:
0 mg/kg
Basis:
other: gavage
- Remarks:
- Doses / Concentrations:
15mg/kg
Basis:
other: gavage
- Remarks:
- Doses / Concentrations:
150mg/kg
Basis:
other: gavage
- Remarks:
- Doses / Concentrations:
500mg/kg
Basis:
other: gavage
- No. of animals per sex per dose:
- Male: 10 animals at 0 mg/kg bw/day
Male: 5 animals at 15 mg/kg bw/day
Male: 5 animals at 150 mg/kg bw/day
Male: 10 animals at 500 mg/kg bw/day
Female: 10 animals at 0 mg/kg bw/day
Female: 5 animals at 15 mg/kg bw/day
Female: 5 animals at 150 mg/kg bw/day
Female: 10 animals at 500 mg/kg bw/day - Control animals:
- yes, concurrent vehicle
- Details on study design:
- - Dose selection rationale: based on acute oral toxicity testing results
- Rationale for animal assignment: random - Positive control:
- n/a
Examinations
- Observations and examinations performed and frequency:
- All rats observed twice daily during pretreatment, treatment and recovery for survival and general condition.
Physical condition and behavior recorded 2-3 hrs after the daily dose at least 2 days per week during the treatment period and weekly during the recovery period at approx the same time each day.
Formulation of different test concentrations were prepared for each dosage level so that all rats received a constant volume of 10mg/kg with each treatment.
BODY WEIGHT: Yes
- Time schedule for examinations: Twice during pretreatment and twice weekly during treatment and recovery. All surviving rats weighed on day of necropsy. - Sacrifice and pathology:
- All rats that died during the study were necropsied as soon as practicable. Those that became moribund or deemed unlikely to survive until the next day were euthanized and necropsied.
All surviving male rats in the 500mg/kg/day group were fasted overnight, euthanized and necropsied on study day 14 following 14 days of consecutive treatment.
5 males and 5 females from each of the 0, 15 and 150mg/kg/day and 4 females from the 500mg/kg/day group were also euthanized and necropsied at the end of the treatment period. - Other examinations:
- Microscopic examination of designated tissues did not reveal any test article-induced target organ pathology.
Results and discussion
Results of examinations
- Clinical signs:
- effects observed, treatment-related
- Description (incidence and severity):
- 6 male and 3 female mortalities
- Mortality:
- mortality observed, treatment-related
- Description (incidence):
- 6 male and 3 female mortalities
- Gross pathological findings:
- no effects observed
- Description (incidence and severity):
- No changes in microscopic pathology
- Details on results:
- CLINICAL SIGNS:
MORTALITY: 5 males and 2 females at dosage of 500mg base/kg/day were found dead or euthanized in a moribund condition by study day 12.Due to excessive test article-related mortality, all surviving rats in the 500mg/kg/day group were necropsied on study day 14.
1 male and 1 female at dosage of 150mg base/kg/day were found dead by study day 6.
Effect levels
- Dose descriptor:
- NOEL
- Effect level:
- 15 mg/kg bw/day (nominal)
- Based on:
- test mat.
- Sex:
- male/female
- Basis for effect level:
- mortality
Target system / organ toxicity
- Critical effects observed:
- not specified
Applicant's summary and conclusion
- Conclusions:
- The no-toxic-effect level ws considered to be 15mg base/kg/day in this study.
- Executive summary:
The oral administration of Abbott-133816 to rats caused mortality in the 150 and 500mg/kg/day dosage groups. These deaths were attributed to a test article-related induction of gaseous extension of the gastrointestinal tract and associated abnormal respiration (gasping, noisy, laboured rales). There were no changes in microscopic pathology that could be directly attributed to test article administration.
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