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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
acute toxicity: oral
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From February 1991
Reliability:
3 (not reliable)
Rationale for reliability incl. deficiencies:
other: GLP study but not well detailed study report.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1991

Materials and methods

Test guideline
Qualifier:
no guideline available
Principles of method if other than guideline:
No further data available
GLP compliance:
yes

Test material

Constituent 1
Reference substance name:
4,5,6,7-tetrahydrothieno[3,2-c]pyridine hydrochloride
IUPAC Name:
4,5,6,7-tetrahydrothieno[3,2-c]pyridine hydrochloride
Constituent 2
Chemical structure
Reference substance name:
4,5,6,7-tetrahydrothieno[3,2-c]pyridinium chloride
EC Number:
249-220-0
EC Name:
4,5,6,7-tetrahydrothieno[3,2-c]pyridinium chloride
Cas Number:
28783-41-7
Molecular formula:
C7H9NS.ClH
IUPAC Name:
4,5,6,7-tetrahydrothieno[3,2-c]pyridin-5-ium chloride
Details on test material:
Test compound: PCR 0665 (Batch 191-160-1)

Test animals

Species:
other: Rat and Mouse
Strain:
other: Rat, Sprague Dawley, CD(SD)BR / Mouse, Swiss, OF1
Sex:
male/female

Administration / exposure

Route of administration:
oral: gavage
Vehicle:
water
Remarks:
tap water
Doses:
0; 321.5; 625; 1250 mg/kg (expressed as salified compound)
No. of animals per sex per dose:
10 (male or female)
Details on study design:
Observation period 14 days (day of treatment = Day 1)

Results and discussion

Effect levelsopen allclose all
Sex:
male
Dose descriptor:
LD50
Effect level:
ca. 625 mg/kg bw
Based on:
test mat.
Remarks on result:
other: Rat
Sex:
female
Dose descriptor:
LD50
Effect level:
625 - 1 250 mg/kg bw
Based on:
test mat.
Remarks on result:
other: Rat
Sex:
male/female
Dose descriptor:
LD50
Effect level:
625 - 1 250 mg/kg bw
Based on:
test mat.
Remarks on result:
other: Mouse
Clinical signs:
other: Rats: Tremors, laboured breathing, ptyalism with blood, convulsions (Day 1) Mice: Laboured breathing, tremors, convulsions (Day 1), piloerection (Day 1 and 2)
Gross pathology:
Animals found dead:
- Rats: Gastric hemorrhage, lungs not collapsed
- Mice: No abnormality detected
Sacrifice on Day 15.
No abnormality detected

Applicant's summary and conclusion

Interpretation of results:
Toxicity Category IV
Remarks:
Migrated information Criteria used for interpretation of results: EU
Conclusions:
LD50 is between 625 and 1250 mg/kg. No major differences between species and sexes were detected.