(E)-1,2-Di(pyridin-4-yl)diazene

Name: (E)-1,2-Di(pyridin-4-yl)diazene
Brand: Vaqora Chemicals
SKU: VQ-051680

About (E)-1,2-Di(pyridin-4-yl)diazene

(E)-1,2-Di(pyridin-4-yl)diazene (CAS 4253-82-1) is a process intermediate or related compound of Roflumilast offered by Vaqora Chemicals. The compound has the formula C10H8N4, corresponding to a molecular weight of 184.2 g/mol. The IUPAC name is dipyridin-4-yldiazene. Common synonyms include 1,2-Di(pyridin-4-yl)diazene and 4,4'-azopyridine.

It is supplied as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

It is a process intermediate or related compound in the synthesis of Roflumilast, useful for route development, impurity fate-and-purge studies and analytical method development. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

API route development
Impurity fate & purge studies
Analytical method development

Industries

Related to Roflumilast

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

Roflumilast impurities

Specifications & identifiers

Chemical identifiers
Product name	(E)-1,2-Di(pyridin-4-yl)diazene
Catalogue No.	VQ-051680
CAS Number	4253-82-1
IUPAC name	dipyridin-4-yldiazene
Molecular formula	C₁₀H₈N₄
Molecular weight	184.2 g/mol
Exact mass	184.0749
HSN code	2933
InChIKey	XUPMSLUFFIXCDA-UHFFFAOYSA-N
SMILES	C1=CN=CC=C1N=NC2=CC=NC=C2
PubChem CID	238589

Physical properties
Physical form	Solid
LogP (XLogP3)	1.6
H-bond donors / acceptors	0 / 4
TPSA	50.5 Å²
Synonyms	1,2-Di(pyridin-4-yl)diazene, 4,4'-azopyridine, 4-[(E)-4-Pyridinylazo]pyridine, 4,4'-Azodipyridine, Pyridine,4,4'-(1,2-diazenediyl)bis-, Pyridine, 4,4'-(1,2-diazenediyl)bis-, 4,4'-Azobispyridine, 4,4'-Azo-dipyridine, 4-[(1E)-2-(pyridin-4-yl)diazen-1-yl]pyridine, Azobis(4-pyridine)

Safety & hazard information (GHS)

Toxic

Harmful / irritant

Signal word: Danger

Hazard statements

H301Toxic if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P270, P271, P280, P301 + P316, P302 + P352, P304 + P340, P305 + P351 + P338, 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 (E)-1,2-Di(pyridin-4-yl)diazene?

The CAS Registry Number of (E)-1,2-Di(pyridin-4-yl)diazene is 4253-82-1. It is also known as 1,2-Di(pyridin-4-yl)diazene, 4,4'-azopyridine, 4-[(E)-4-Pyridinylazo]pyridine.

What is the molecular formula and molecular weight of (E)-1,2-Di(pyridin-4-yl)diazene?

(E)-1,2-Di(pyridin-4-yl)diazene has the molecular formula C10H8N4 and a molecular weight of 184.2 g/mol. Its IUPAC name is dipyridin-4-yldiazene.

What is (E)-1,2-Di(pyridin-4-yl)diazene used for?

(E)-1,2-Di(pyridin-4-yl)diazene is supplied as a characterised reference material related to Roflumilast. 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 (E)-1,2-Di(pyridin-4-yl)diazene can I order?

We supply (E)-1,2-Di(pyridin-4-yl)diazene, 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 (E)-1,2-Di(pyridin-4-yl)diazene?

Yes. Every lot of (E)-1,2-Di(pyridin-4-yl)diazene 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 (E)-1,2-Di(pyridin-4-yl)diazene be shipped internationally?

Yes. (E)-1,2-Di(pyridin-4-yl)diazene 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.