2-Chloro-7-cyclopentyl-N,N-dimethyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide

Skin irritation / corrosion

Administrative data

Endpoint:

skin irritation: in vivo

Type of information:

experimental study

Adequacy of study:

key study

Study period:

14 Feb - 01 Mar 2014

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

The in vivo test is performed according to Novartis internal Tiered Testing Strategy as a regular set of tests for all substances during the development of the project. (TRD Development Manual Chapter C.26 requirements.)
The Novartis Pharma Data Set (NPDS) has been put in place many years before the REACh regulation was released and we have, since then, systematically acquired data for all substances (RM, IM, DS, reagents, etc.) on behalf of TRD and PCS, for internal and external classification purposes.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2014

Report date:

2014

Materials and methods

Test guideline

Test guideline 1

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 404 (Acute Dermal Irritation / Corrosion)

Version / remarks:

adopted in 2015

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 404 (Acute Dermal Irritation / Corrosion)

Version / remarks:

adopted in 2002

Test guideline 3

Qualifier:

according to guideline

Guideline:

EU Method B.4 (Acute Toxicity: Dermal Irritation / Corrosion)

Version / remarks:

adopted in 2008

Test guideline 4

Qualifier:

according to guideline

Guideline:

EPA OPPTS 870.2500 (Acute Dermal Irritation)

Version / remarks:

adopted in 1998

Test guideline 5

Qualifier:

according to guideline

Guideline:

other: Food and Agricultural Materials Inspection Centre (FAMIC), 12 Nohsan, Notification No. 8147

Version / remarks:

adopted in 2011

GLP compliance:

yes

Test material

Test material information

1

Reference substance name:

2-chloro-7-cyclopentyl-N,N-dimethyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide

Cas Number:

1211443-61-6

Molecular formula:

C14 H17 Cl N4 O

IUPAC Name:

2-chloro-7-cyclopentyl-N,N-dimethyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide

Test animals

Species:

rabbit

Strain:

New Zealand White

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: Charles River France, L’Arbresle Cedex, France
- Age at study initiation: 12 - 24 weeks
- Weight at study initiation: at least 1.5 kg
- Housing: individual, in labeled cages with perforated floors and shelters
- Diet: Pelleted diet for rabbits (Global Diet 2030 from Harlan Teklad®, Mucedola, Milanese, Italy) approx. 100 g/ day. Hay (TecniLab-BMI BV, Someren, The Netherlands) and wooden sticks (Swedish aspen wood, Bioservices, Uden, The Netherlands) were available during the study period
- Water: tap water, ad libitum (analysis were performed)
- Acclimation period: at least 5 days

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

Test system

Type of coverage:

semiocclusive

Preparation of test site:

clipped

Vehicle:

water

Remarks:

(for moistening)

Controls:

not required

Amount / concentration applied:

TEST MATERIAL
- Amount(s) applied: 0.5 g

VEHICLE
- Amount(s) applied: 0.6 mL

Duration of treatment / exposure:

4 h

Observation period:

72 h
Reading time points: 1, 24, 48 and 72 h

Number of animals:

3 males

Details on study design:

TEST SITE
- Area of exposure: 2 x 3 cm
- Type of wrap if used: The test substance was moistened with 0.6 mL of the vehicle and applied to the skin of one flank, using a metalline patch of 2x3 cm. The patch was mounted on Micropore tape, which was wrapped around the abdomen and secured with Coban elastic bandage

REMOVAL OF TEST SUBSTANCE
- Washing: Four hours after the application, the dressing was removed and the skin cleaned of residual test substance using tap water.
- Time after start of exposure: 4 h

OBSERVATION TIME POINTS
1, 24, 48 and 72 h after removal of the test substance

SCORING SYSTEM:
- Method of calculation: Draize scoring system

Results and discussion

In vivo

Results

Results 1

Irritation parameter:

erythema score

Basis:

mean

Remarks:

of 3 animals

Time point:

24/48/72 h

Score:

0

Max. score:

4

Reversibility:

other: not applicable

Remarks on result:

no indication of irritation

Results 2

Irritation parameter:

edema score

Basis:

mean

Remarks:

of 3 animals

Time point:

24/48/72 h

Score:

0

Max. score:

4

Reversibility:

other: not applicable

Remarks on result:

no indication of irritation

Irritant / corrosive response data:

No irritation, corrosion or symptoms of systemic toxicity were observed in the animals during the test period and no mortality occurred.

Applicant's summary and conclusion

Interpretation of results:

other: CLP/EU GHS criteria not met, no classification required according to Regulation (EC) No 1272/2008.

Conclusions:

CLP: not classified

An in vivo skin irritation study according to OECD Guideline 404 in rabbits was performed with the test substance. No skin irritation was observed.