2,4-Dichloro-6,7-dimethoxyquinazoline

2,4-二氯-6,7-二甲氧基喹唑啉

Also known as: Doxazosin EP Impurity E, Doxazosin Related Compound E, MFCD00051733, 2,4-Dichlor-6,7-dimethoxy-chinazolin, 2-Chloro-6,7-dimethoxyquinazolin-4-yl Chloride, TIMTEC-BB SBB000972, 2,4-Dichloro-6,7-dimethoxyquin

2,4-Dichloro-6,7-dimethoxyquinazoline (CAS 27631-29-4) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C10H8Cl2N2O2 and a molecular weight of 259.089 g/mol. It is also known as Doxazosin EP Impurity E, Doxazosin Related Compound E and MFCD00051733. Key properties include a melting point of 172-177 °C, a boiling point of 340.5±42.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 159.7±27.9 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
27631-29-4
Jingsj CID
J-1990745-5
Molecular Formula
C10H8Cl2N2O2
Chinese Name
2,4-二氯-6,7-二甲氧基喹唑啉
Molecular Weight
259.089 g/mol
Category
Organohalogen Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point172-177 °C
Boiling Point340.5±42.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point159.7±27.9 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 2,4-Dichloro-6,7-dimethoxyquinazoline?

The CAS number of 2,4-Dichloro-6,7-dimethoxyquinazoline is 27631-29-4.

What are the molecular formula and molecular weight of 2,4-Dichloro-6,7-dimethoxyquinazoline?

2,4-Dichloro-6,7-dimethoxyquinazoline has molecular formula C10H8Cl2N2O2 and molecular weight 259.089 g/mol.

Is 2,4-Dichloro-6,7-dimethoxyquinazoline hazardous?

2,4-Dichloro-6,7-dimethoxyquinazoline has GHS signal word Warning.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "2,4-Dichloro-6,7-dimethoxyquinazoline (CAS 27631-29-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1990745-5 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.