.alpha.-D-Glucopyranosyl bromide, 2,3,4,6-tetrakis(2,2-dimethylpropanoate)

Acute Toxicity: oral

Administrative data

Endpoint:

acute toxicity: oral

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2016-08-04 to 2016-08-31

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2016

Report date:

2016

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 423 (Acute Oral toxicity - Acute Toxic Class Method)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method B.1 tris (Acute Oral Toxicity - Acute Toxic Class Method)

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

EPA OPPTS 870.1100 (Acute Oral Toxicity)

Deviations:

no

Test guideline 4

Qualifier:

according to guideline

Guideline:

other: Japanese Ministry of Agriculture, Foresty and Fisheries

Version / remarks:

12 Nousan, Notification No 8147, November 2000

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Test type:

acute toxic class method

Limit test:

no

Test material

Test material information

Constituent 1

Reference substance name:

[(2R,3R,4S,5R,6R)-6-bromo-3,4,5-tris[(2,2-dimethylpropanoyl)oxy]oxan-2-yl]methyl 2,2-dimethylpropanoate

EC Number:

686-241-8

Cas Number:

81058-27-7

Molecular formula:

C26H43BrO9

IUPAC Name:

[(2R,3R,4S,5R,6R)-6-bromo-3,4,5-tris[(2,2-dimethylpropanoyl)oxy]oxan-2-yl]methyl 2,2-dimethylpropanoate

Test material form:

solid: crystalline

Details on test material:

- Name of test material (as cited in study reports): JNJ-42808389-AAA (T003421)
- Physical state: crystalline powder
- Appearance: white powder

Specific details on test material used for the study:

Test Material SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: Janssen Pharmaceuticals N.V., M15KB4494
- Expiration date of the lot/batch: 13-Nov-2016 (retest date)
- Purity correction factor: 1
- Laboratoory Test ID: 206847/A

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Room Temperature
- Solubility and stability of the test substance in the solvent/vehicle: Analysis of test item in vehicle for concentration, stability, homogeneity was not performed, however preparation was performed with approved procedure and documented in detail. Homogeneity was visually inspected prior to use.

TREATMENT OF TEST MATERIAL PRIOR TO TESTING
- Treatment of test material prior to testing: Test preparation material was kept at room temperature no more than 4 hours before animals were dosed. Preparations were stirred on magnetic stirrer during dosing.

Test animals

Species:

rat

Strain:

Wistar

Sex:

female

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: female rats (nulliparous and non-pregnant), Wistar strain Crl:WI (Han) (outbred, SPF-Quality); Charles River Deutschland, Sulzfeld, Germany
- Age at study initiation: approximately 8 weeks
- Weight at study initiation: 164, 159, 164, 141, 168, 163 grams
- Fasting period before study: animals were deprived of food overnight prior to dosing and until 3-4 hours after administration of the test item. Water was available ad libitum.
- Housing: group housing of 3 animals per cage in labeled Makrolon cages (MIV type; height 18 cm.) containing sterilized sawdust as bedding material (Lignocel S 8-15, JRS - J.Rettenmaier & Söhne GmbH + CO. KG, Rosenberg, Germany) and paper as cage-enrichment (Enviro-dri, Wm. Lillico & Son (Wonham Mill Ltd), Surrey, United Kingdom).
- Diet (e.g. ad libitum): ad libitum, free access to pelleted rodent diet
- Water (e.g. ad libitum): ad libitum, free access to tap water.
- Acclimation period: at least 5 days before start of treatment under laboratory conditions.


ENVIRONMENTAL CONDITIONS
- Temperature (°C): 18-24 °C
- Humidity (%): 40-70%
- Air changes (per hr): at least 10
- Photoperiod (hrs dark / hrs light): 12/12

IN-LIFE DATES: From: 04 August 2016
To:31 August 2016

Administration / exposure

Route of administration:

oral: gavage

Vehicle:

propylene glycol

Details on oral exposure:

VEHICLE
- Concentration in vehicle: 200 mg/mL
- Justification for choice of vehicle: The vehicle was selected based on trial preparations performed at Charles River Den Bosch and on test item data supplied by the Sponsor. The vehilce was chosen from: water (Elix) (test item did not dissolve), 1% aq. carboxymethyl cellulose (test item did not dissolve), propylene glycol (spec. gravity 1.036) (Turbid solution), polyethylene glycol 400 (spec. gravity 1.125) and corn oil (spec. gravity 0.92). There was no information available regarding the solubility or stability in vehicle.

MAXIMUM DOSE VOLUME APPLIED: 10 mL/kg

DOSAGE PREPARATION (if unusual):
- The preparations (w/w) were kept at room temperature and were dosed within 4 hours after adding the vehicle to the test item. Homogeneity was obtained to visually acceptable levels and the formulations were stirred during dosing, which ensures homogeneity sufficient for these kinds of studies.
- Adjustment was made for specific gravity of the vehicle. No correction was made for purity of the test item.

Doses:

2000 mg/kg (single dosage)

No. of animals per sex per dose:

3 females per dose

Control animals:

no

Details on study design:

- Duration of observation period following administration: 14 days (until day 15)
- Frequency of observations and weighing:
Mortality/viability: Twice daily.
Body weights: Days 1 (pre-administration), 8 and 15.
Clinical signs: At periodic intervals on the day of dosing (day 1) and once daily thereafter, until day 15. The signs were graded according to fixed scales and the time of onset, degree and duration were recorded: maximum grade 4: grading slight (1) to very severe (4); maximum grade 3: grading slight (1) to severe (3); maximum grade 1: presence is scored (1).
- Necropsy of survivors performed: Yes, all animals were sacrificed by oxygen/carbon dioxide procedure and subjected to necropsy. Descriptions of all internal macroscopic abnormalities were recorded.

Statistics:

No statistical analysis was performed.

Results and discussion

Effect levels

Key result

Sex:

female

Dose descriptor:

LD50

Effect level:

> 2 000 mg/kg bw

Based on:

test mat.

Mortality:

No mortality occured

Clinical signs:

other: Uncoordinated movements, piloerection and/or hunched posture were noted for five animals on Day 1.

Body weight:

other body weight observations

Remarks:

The mean body weight gain shown by the surviving animals over the study period was considered to be similar to that expected for normal untreated animals of the same age and strain.

Gross pathology:

No abnormalities were found at macroscopic post mortem examination of all animals.

Any other information on results incl. tables

Number of dead animals in each test group with 3 animals each:

Females 2000 mg/kg: 0

Females 2000 mg/kg: 0

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

The oral LD50 value of T003421 in Wistar rats was established to exceed 2000 mg/kg body weight. According to OECD 423 test guideline, the LD50 cut-off value was considered to exceed 5000 mg/kg body weight.

Based on results, T003421 does not have to be classified and has no obligatory labelling requirement for acute oral toxicity according to the Globally Harmonized System of Classification and labelling of Chemicals of the United Nations (2015) and Regulation (EC) No 1272/2008 on classification, labelling and packing of substances and mixtures (including all amendments).