Terazosin EP Impurity B

Name: Terazosin EP Impurity B
Brand: Vaqora Chemicals
SKU: VQ-028273

About Terazosin EP Impurity B

Vaqora Chemicals supplies Terazosin EP Impurity B, a pharmacopeial impurity of Terazosin registered under CAS number 1177261-73-2. With the molecular formula C19H24N4O5, it has a molar mass of 388.4 g/mol. Systematically, it is named 6,7-dimethoxy-2-[4-(oxolane-2-carbonyl)piperazin-1-yl]-3H-quinazolin-4-one. It is also known as Desamino hydroxy terazosin or Terazosin Impurity B.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

Pharmaceutical QC and development laboratories use this impurity standard of Terazosin to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Terazosin EP Impurity B is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Pharmacopeial method verification
Impurity profiling
QC release testing
ANDA / DMF filings

Industries

Related to Terazosin

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

Terazosin impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Terazosin EP Impurity B
Catalogue No.	VQ-028273
CAS Number	1177261-73-2
IUPAC name	6,7-dimethoxy-2-[4-(oxolane-2-carbonyl)piperazin-1-yl]-3H-quinazolin-4-one
Molecular formula	C₁₉H₂₄N₄O₅
Molecular weight	388.4 g/mol
Exact mass	388.1747
Grade	Reference Standard
HSN code	38229090
InChIKey	SOPCVLMNPKFJKQ-UHFFFAOYSA-N
SMILES	COC1=C(C=C2C(=C1)C(=O)NC(=N2)N3CCN(CC3)C(=O)C4CCCO4)OC
PubChem CID	136276642

Physical properties
Physical form	Solid
LogP (XLogP3)	0.3
H-bond donors / acceptors	1 / 6
TPSA	92.7 Å²
Synonyms	Terazosin Hydrochloride Dihydrate - Impurity B, Desamino hydroxy terazosin, 4(3H)-Quinazolinone, 6,7-dimethoxy-2-(4-((tetrahydro-2-furanyl)carbonyl)-1-piperazinyl)-, Terazosin hydrochloride dihydrate specified impurity B, 6,7-Dimethoxy-2-(4-(tetrahydrofuran-2-carbonyl)piperazin-1-yl)quinazolin-4(1H)-one, Terazosin Impurity B, 6,7-dimethoxy-2-[4-(oxolane-2-carbonyl)piperazin-1-yl]-1,4-dihydroquinazolin-4-one, Terazosin hydrochloride dihydrate impurity B, 6,7-Dimethoxy-2-[4-[(tetrahydro-2-furanyl)carbonyl]-1-piperazinyl]-4(3H)-quinazolinone

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H319Causes serious eye irritation

Precautionary statements: P264 + P265, P280, P305 + P351 + P338, P337 + P317

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 Terazosin EP Impurity B?

The CAS Registry Number of Terazosin EP Impurity B is 1177261-73-2. It is also known as Terazosin Hydrochloride Dihydrate - Impurity B, Desamino hydroxy terazosin, 4(3H)-Quinazolinone, 6,7-dimethoxy-2-(4-((tetrahydro-2-furanyl)carbonyl)-1-piperazinyl)-.

What is the molecular formula and molecular weight of Terazosin EP Impurity B?

Terazosin EP Impurity B has the molecular formula C19H24N4O5 and a molecular weight of 388.4 g/mol. Its IUPAC name is 6,7-dimethoxy-2-[4-(oxolane-2-carbonyl)piperazin-1-yl]-3H-quinazolin-4-one.

What is Terazosin EP Impurity B used for?

Terazosin EP Impurity B is supplied as a characterised reference material related to Terazosin. 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 Terazosin EP Impurity B can I order?

We supply Terazosin EP Impurity B 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 Terazosin EP Impurity B?

Yes. Every lot of Terazosin EP Impurity B 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 Terazosin EP Impurity B be shipped internationally?

Yes. Terazosin EP Impurity B 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.