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Pharmacopeial Impurities (EP / USP / BP)

Terazosin EP Impurity E

Reference StandardAvailable on request

Buy Terazosin EP Impurity E (CAS 102839-00-9) from Zemixal. Request a quote with price, lead time and documents. Catalogue no. ZX-021471.

Pack sizes
Terazosin EP Impurity E chemical structure
CAS number102839-00-9
FormulaC24H28N8O4
Molar mass492.5 g/mol
Physical formSolid
HS code38229090
InChIKeyXJWKWPCORQUMQI-UHFFFAOYSA-N
IUPAC name2-[4-(4-amino-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl]-6,7-dimethoxyquinazolin-4-amine

About Terazosin EP Impurity E

Terazosin EP Impurity E is supplied by Zemixal as a characterised reference material for Doxazosin analysis. For your records (Reference Standard), the material is defined by CAS 102839-00-9, formula C24H28N8O4 and molar mass 492.5 g/mol. It is handled as a solid.

Typical applications

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

Handling and storage

Hazard communication follows GHS (Warning: H302, H361 and H373). Our SDS lists exposure controls and first-aid measures.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Each lot travels with a certificate of analysis with characterisation data. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Doxazosin

See every impurity, metabolite and related compound we list for this API.

Doxazosin standards

Typical uses

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

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Terazosin EP Impurity E
Product nameTerazosin EP Impurity E
Catalogue numberZX-021471
CAS number102839-00-9
IUPAC name2-[4-(4-amino-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl]-6,7-dimethoxyquinazolin-4-amine
Molecular formulaC24H28N8O4
Molar mass492.5 g/mol
Exact mass492.2234
GradeReference Standard
Physical formSolid
XLogP32.7
H-bond donors / acceptors2 / 12
Topological polar surface area147 Ų
HS code38229090
InChIKeyXJWKWPCORQUMQI-UHFFFAOYSA-N
SMILESCOC1=C(C=C2C(=C1)C(=NC(=N2)N3CCN(CC3)C4=NC5=CC(=C(C=C5C(=N4)N)OC)OC)N)OC
PubChem CID616293
SynonymsPrazosin EP Impurity E, Doxazosin EP Impurity H, Terazosin EP Impurity E (free base), Prazosin Hydrochloride - Impurity E, Terazosin Hydrochloride Dihydrate - Impurity E, Doxazosin Mesylate - Impurity H (FREE BASE), Doxazosin impurity H, 2,2'-(Piperazine-1,4-diyl)bis(6,7-dimethoxyquinazolin-4-amine), 1,4-Bis(4-amino-6,7-dimethoxy-2-quinazolinyl)piperazine, Doxazosin mesilate impurity H, 2,2'-(1,4-Piperazinediyl)bis[6,7-dimethoxy-4-quinazolinamine]

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful
GHS08 Health hazard
Health hazard

Signal word Warning

  • H302Harmful if swallowed
  • H361Suspected of damaging fertility or the unborn child
  • H373May causes damage to organs through prolonged or repeated exposure

Precautionary statements P203, P260, P264, P270, P280, P301 + P317, P318, P319, P330, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Terazosin EP Impurity E
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Terazosin EP Impurity E

Which CAS number identifies Terazosin EP Impurity E?
Terazosin EP Impurity E is registered under CAS 102839-00-9. You may also see it listed as Prazosin EP Impurity E, Doxazosin EP Impurity H, Terazosin EP Impurity E (free base). Our catalogue number for this item is ZX-021471.
What are the formula and molar mass of Terazosin EP Impurity E?
For Terazosin EP Impurity E, its formula is C24H28N8O4 and its molar mass is 492.5 g/mol. The systematic (IUPAC) name is 2-[4-(4-amino-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl]-6,7-dimethoxyquinazolin-4-amine. InChIKey XJWKWPCORQUMQI-UHFFFAOYSA-N lets you match it in any structure database.
How is Terazosin EP Impurity E used in pharmaceutical QC?
Terazosin EP Impurity E is a characterised reference material linked to Doxazosin. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Terazosin EP Impurity E?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Terazosin EP Impurity E?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Terazosin EP Impurity E to my country?
Yes. Because Terazosin EP Impurity E is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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