4,4'-(Diazene-1,2-diyl)diphenol

Name: 4,4'-(Diazene-1,2-diyl)diphenol
Brand: Vaqora Chemicals
SKU: VQ-041431

About 4,4'-(Diazene-1,2-diyl)diphenol

Listed under CAS 2050-16-0, 4,4'-(Diazene-1,2-diyl)diphenol is an impurity of Phenacetin available from Vaqora Chemicals. The compound has the formula C12H10N2O2, corresponding to a molecular weight of 214.22 g/mol. The IUPAC name is 4-[(4-hydroxyphenyl)diazenyl]phenol. It is also known as 4,4'-Dihydroxyazobenzene or 4,4'-Azodiphenol.

The product is provided 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.

As a characterised impurity of Phenacetin, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

We offer 4,4'-(Diazene-1,2-diyl)diphenol in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

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

Industries

Related to Phenacetin

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

Phenacetin impurities

Specifications & identifiers

Chemical identifiers
Product name	4,4'-(Diazene-1,2-diyl)diphenol
Catalogue No.	VQ-041431
CAS Number	2050-16-0
IUPAC name	4-[(4-hydroxyphenyl)diazenyl]phenol
Molecular formula	C₁₂H₁₀N₂O₂
Molecular weight	214.22 g/mol
Exact mass	214.0742
Grade	Reference Standard
HSN code	38229090
InChIKey	WKODVHZBYIBMOC-UHFFFAOYSA-N
SMILES	C1=CC(=CC=C1N=NC2=CC=C(C=C2)O)O
PubChem CID	101245

Physical properties
Physical form	Solid
LogP (XLogP3)	3.4
H-bond donors / acceptors	2 / 4
TPSA	65.2 Å²
Synonyms	4,4'-Dihydroxyazobenzene, 4,4'-Azodiphenol, 4,4'-Azobis(phenol), trans-4,4'-Azodiphenol, Phenol, 4,4'-(1,2-diazenediyl)bis-, p-Azophenol, Phenol, 4,4'-azobis-, p,p'-Dihydroxyazobenzene, Phenol, 4,4'-azodi, 4-(4-Hydroxyphenylazo)phenol, Phenol, 4,4'-(1E)-1,2-diazenediylbis-, (e)-4,4'-(diazene-1,2-diyl)diphenol

Safety & hazard information (GHS)

Harmful / irritant

Health hazard

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H319Causes serious eye irritation
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled

Precautionary statements: P233, P260, P264, P264 + P265, P270, P271, P280, P284, P301 + P317, P304 + P340, P305 + P351 + P338, P330, P337 + P317, P342 + P316, P403, 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 4,4'-(Diazene-1,2-diyl)diphenol?

The CAS Registry Number of 4,4'-(Diazene-1,2-diyl)diphenol is 2050-16-0. It is also known as 4,4'-Dihydroxyazobenzene, 4,4'-Azodiphenol, 4,4'-Azobis(phenol).

What is the molecular formula and molecular weight of 4,4'-(Diazene-1,2-diyl)diphenol?

4,4'-(Diazene-1,2-diyl)diphenol has the molecular formula C12H10N2O2 and a molecular weight of 214.22 g/mol. Its IUPAC name is 4-[(4-hydroxyphenyl)diazenyl]phenol.

What is 4,4'-(Diazene-1,2-diyl)diphenol used for?

4,4'-(Diazene-1,2-diyl)diphenol is supplied as a characterised reference material related to Phenacetin. 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 4,4'-(Diazene-1,2-diyl)diphenol can I order?

We supply 4,4'-(Diazene-1,2-diyl)diphenol 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 4,4'-(Diazene-1,2-diyl)diphenol?

Yes. Every lot of 4,4'-(Diazene-1,2-diyl)diphenol 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 4,4'-(Diazene-1,2-diyl)diphenol be shipped internationally?

Yes. 4,4'-(Diazene-1,2-diyl)diphenol 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.