2,4-Dichloro-6,7-dimethoxyquinazoline
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. 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. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 27631-29-4
- Jingsj CID
- J-1990745-0
- Molecular Formula
- C10H8Cl2N2O2
- Molecular Weight
- 259.089 g/mol
- Category
- Organohalogen Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 172-177 °C |
|---|---|
| Boiling Point | 340.5±42.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 159.7±27.9 °C |
| Exact Mass | 257.996277 |
| PSA | 44.24000 |
| LogP | 2.69 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.614 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
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 and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 2,4-Dichloro-6,7-dimethoxyquinazoline?
For 2,4-Dichloro-6,7-dimethoxyquinazoline, Upstream Products: 6,7-Dimethoxyquinazoline-2,4(1H,3H)-dione, Bis(trichloromethyl) carbonate, 2-Amino-4,5-dimethoxybenzonitrile; Downstream Products: 2-Chloro-6,7-dimethoxyquinazoline, 2-Chloro-6,7-dimethoxy-3H-quinazolin-4-one, 2-Chloro-4-amino-6,7-dimethoxyquinazoline.
Data compiled from public chemical databases such as PubChem 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-1990745-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.