7-Deazapurine

Name: 7-Deazapurine
Brand: Vaqora Chemicals
SKU: VQ-044087

About 7-Deazapurine

7-Deazapurine is an impurity of Tofacitinib carrying the CAS registry number 271-70-5. Its molecular formula is C6H5N3 and its molecular weight is 119.12 g/mol. Systematically, it is named 7H-pyrrolo[2,3-d]pyrimidine. Alternative names: 3h-pyrrolo[2,3-d]pyrimidine and 7h-pyrrolo(2,3-d)pyrimidine.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. It carries the GHS signal word “Warning” with 6 hazard statements. Review the Safety Data Sheet before use.

As a characterised impurity of Tofacitinib, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, 7-Deazapurine is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Tofacitinib

View every impurity, metabolite and intermediate we list for Tofacitinib.

Tofacitinib impurities

Specifications & identifiers

Chemical identifiers
Product name	7-Deazapurine
Catalogue No.	VQ-044087
CAS Number	271-70-5
IUPAC name	7H-pyrrolo[2,3-d]pyrimidine
Molecular formula	C₆H₅N₃
Molecular weight	119.12 g/mol
Exact mass	119.0483
Grade	Reference Standard
HSN code	38229090
InChIKey	JJTNLWSCFYERCK-UHFFFAOYSA-N
SMILES	C1=CNC2=NC=NC=C21
PubChem CID	261591

Physical properties
Physical form	Solid
LogP (XLogP3)	0.7
H-bond donors / acceptors	1 / 2
TPSA	41.6 Å²
Synonyms	3h-pyrrolo[2,3-d]pyrimidine, 7h-pyrrolo(2,3-d)pyrimidine, 3H-pyrrolo(2,3-d)pyrimidine, 1H-Pyrrolo[2,3-d]pyrimidine, Pyrrolo[2,3-d]pyrimidine, a 7-deazapurine, 1h-pyrrolo(2,3-d)pyrimidine, 7H-Pyrrolo[2,3d]pyrimidine, 7H-Pyrrolo[2,3-d]pyrimidine, AldrichCPR

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H312Harmful in contact with skin
H315Causes skin irritation
H319Causes serious eye irritation
H332Harmful if inhaled
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P317, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of 7-Deazapurine?

The CAS Registry Number of 7-Deazapurine is 271-70-5. It is also known as 3h-pyrrolo[2,3-d]pyrimidine, 7h-pyrrolo(2,3-d)pyrimidine, 3H-pyrrolo(2,3-d)pyrimidine.

What is the molecular formula and molecular weight of 7-Deazapurine?

7-Deazapurine has the molecular formula C6H5N3 and a molecular weight of 119.12 g/mol. Its IUPAC name is 7H-pyrrolo[2,3-d]pyrimidine.

What is 7-Deazapurine used for?

7-Deazapurine is supplied as a characterised reference material related to Tofacitinib. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of 7-Deazapurine can I order?

We supply 7-Deazapurine in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 7-Deazapurine?

Yes. Every lot of 7-Deazapurine is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 7-Deazapurine be shipped internationally?

Yes. 7-Deazapurine is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.