2-Chloro-5,6-diphenylpyrazine

Name: 2-Chloro-5,6-diphenylpyrazine
Brand: Vaqora Chemicals
SKU: VQ-023349

About 2-Chloro-5,6-diphenylpyrazine

Vaqora Chemicals supplies 2-Chloro-5,6-diphenylpyrazine, an impurity of Selexipag registered under CAS number 41270-66-0. The compound has the formula C16H11ClN2, corresponding to a molecular weight of 266.72 g/mol. The IUPAC name is 5-chloro-2,3-diphenylpyrazine. Alternative names: 2,3-diphenyl-5-chloropyrazine and 5-chloro-2,3-diphenyl-pyrazine.

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 “Danger” with 6 hazard statements. Review the Safety Data Sheet before use.

This Selexipag impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies 2-Chloro-5,6-diphenylpyrazine in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

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

Industries

Related to Selexipag

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

Selexipag impurities

Specifications & identifiers

Chemical identifiers
Product name	2-Chloro-5,6-diphenylpyrazine
Catalogue No.	VQ-023349
CAS Number	41270-66-0
IUPAC name	5-chloro-2,3-diphenylpyrazine
Molecular formula	C₁₆H₁₁ClN₂
Molecular weight	266.72 g/mol
Exact mass	266.0611
Grade	Reference Standard
HSN code	38229090
InChIKey	VUGNCPVAXWZTOL-UHFFFAOYSA-N
SMILES	C1=CC=C(C=C1)C2=NC=C(N=C2C3=CC=CC=C3)Cl
PubChem CID	3654493

Physical properties
Physical form	Solid
LogP (XLogP3)	4.1
H-bond donors / acceptors	0 / 2
TPSA	25.8 Å²
Synonyms	2,3-diphenyl-5-chloropyrazine, 5-chloro-2,3-diphenyl-pyrazine, 5-Chloro-23-diphenylpyrazine, CS-M3068, Pyrazine, 5-chloro-2,3-diphenyl-

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Health hazard

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H314Causes severe skin burns and eye damage
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H360May damage fertility or the unborn child

Precautionary statements: P203, P260, P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P301 + P330 + P331, P302 + P352, P302 + P361 + P354, P304 + P340, P305 + P351 + P338, P305 + P354 + P338, P316, P318, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P363

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 2-Chloro-5,6-diphenylpyrazine?

The CAS Registry Number of 2-Chloro-5,6-diphenylpyrazine is 41270-66-0. It is also known as 2,3-diphenyl-5-chloropyrazine, 5-chloro-2,3-diphenyl-pyrazine, 5-Chloro-23-diphenylpyrazine.

What is the molecular formula and molecular weight of 2-Chloro-5,6-diphenylpyrazine?

2-Chloro-5,6-diphenylpyrazine has the molecular formula C16H11ClN2 and a molecular weight of 266.72 g/mol. Its IUPAC name is 5-chloro-2,3-diphenylpyrazine.

What is 2-Chloro-5,6-diphenylpyrazine used for?

2-Chloro-5,6-diphenylpyrazine is supplied as a characterised reference material related to Selexipag. 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 2-Chloro-5,6-diphenylpyrazine can I order?

We supply 2-Chloro-5,6-diphenylpyrazine 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 2-Chloro-5,6-diphenylpyrazine?

Yes. Every lot of 2-Chloro-5,6-diphenylpyrazine 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 2-Chloro-5,6-diphenylpyrazine be shipped internationally?

Yes. 2-Chloro-5,6-diphenylpyrazine 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.