(E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)a… 321571-07-7

About (E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-Pyrazole-4-carboxylic Acid Ethyl Ester

(E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-Pyrazole-4-carboxylic Acid Ethyl Ester is an impurity of Allopurinol carrying the CAS registry number 321571-07-7. Formula C12H14N4O4, molecular weight 278.26 g/mol. Systematically, it is named ethyl 5-[(2-cyano-3-ethoxy-3-oxoprop-1-enyl)amino]-1H-pyrazole-4-carboxylate.

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. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

As a characterised impurity of Allopurinol, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Our customers for this product work in 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

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

Industries

Related to Allopurinol

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

Allopurinol impurities

Specifications & identifiers

Chemical identifiers
Product name	(E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-Pyrazole-4-carboxylic Acid Ethyl Ester
Catalogue No.	VQ-021497
CAS Number	321571-07-7
IUPAC name	ethyl 5-[(2-cyano-3-ethoxy-3-oxoprop-1-enyl)amino]-1H-pyrazole-4-carboxylate
Molecular formula	C₁₂H₁₄N₄O₄
Molecular weight	278.26 g/mol
Exact mass	278.1015
Grade	Reference Standard
HSN code	38229090
InChIKey	GMGGKDVJSPDXNB-UHFFFAOYSA-N
SMILES	CCOC(=O)C1=C(NN=C1)NC=C(C#N)C(=O)OCC
PubChem CID	3797861

Physical properties
Physical form	Solid
LogP (XLogP3)	1.6
H-bond donors / acceptors	2 / 7
TPSA	117 Å²
Synonyms	Ethyl-3-(2-carbethoxy-2-cyanoethenyl)amino-1H-pyrazole-4-carboxylate, Ethyl 3-((2-cyano-3-ethoxy-3-oxoprop-1-en-1-yl)amino)-1H-pyrazole-4-carboxylate, Ethyl (E/Z)-3-(2-Carbethoxy-2-cyanoethenyl)amino-1H-pyrazole-4-carboxylate, ethyl 3-[(2-cyano-3-ethoxy-3-oxoprop-1-en-1-yl)amino]-1h-pyrazole-4-carboxylate, (Ethyl-(E/Z)-3-(2-carbethoxy-2-cyanoethenyl)amino-1H-pyrazole-4-carboxylate), ethyl 5-[(2-cyano-3-ethoxy-3-oxo-prop-1-enyl)amino]-1H-pyrazole-4-carboxylate

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation

Precautionary statements: P264, P264 + P265, P280, P302 + P352, P305 + P351 + P338, P321, P332 + P317, P337 + P317, P362 + P364

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/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-Pyrazole-4-carboxylic Acid Ethyl Ester?

The CAS Registry Number of (E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-Pyrazole-4-carboxylic Acid Ethyl Ester is 321571-07-7. It is also known as Ethyl-3-(2-carbethoxy-2-cyanoethenyl)amino-1H-pyrazole-4-carboxylate, Ethyl 3-((2-cyano-3-ethoxy-3-oxoprop-1-en-1-yl)amino)-1H-pyrazole-4-carboxylate, Ethyl (E/Z)-3-(2-Carbethoxy-2-cyanoethenyl)amino-1H-pyrazole-4-carboxylate.

What is the molecular formula and molecular weight of (E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-Pyrazole-4-carboxylic Acid Ethyl Ester?

(E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-Pyrazole-4-carboxylic Acid Ethyl Ester has the molecular formula C12H14N4O4 and a molecular weight of 278.26 g/mol. Its IUPAC name is ethyl 5-[(2-cyano-3-ethoxy-3-oxoprop-1-enyl)amino]-1H-pyrazole-4-carboxylate.

What is (E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-Pyrazole-4-carboxylic Acid Ethyl Ester used for?

(E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-Pyrazole-4-carboxylic Acid Ethyl Ester is supplied as a characterised reference material related to Allopurinol. 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/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-Pyrazole-4-carboxylic Acid Ethyl Ester can I order?

We supply (E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-Pyrazole-4-carboxylic Acid Ethyl Ester 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 (E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-Pyrazole-4-carboxylic Acid Ethyl Ester?

Yes. Every lot of (E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-Pyrazole-4-carboxylic Acid Ethyl Ester 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/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-Pyrazole-4-carboxylic Acid Ethyl Ester be shipped internationally?

Yes. (E/Z)-3-[(2-Cyano-3-ethoxy-3-oxo-1-propenyl)amino]-1H-Pyrazole-4-carboxylic Acid Ethyl Ester 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.