2-Chloro-4-amino-6,7-dimethoxyquinazoline

Also known as: 4-Amino-2-chloro-6,7-dimethoxyquinazoline, 2-Chloro-6,7-dimethoxyquinazolin-4-amine, 2-Chloro-6,7-dimethoxy-4-quinazolinamine, 2-Chloro-6,7-dimethoxy-4-aminoquinazoline, 4-Quinazolinamine, 2-chloro-6,7-dimethoxy-, Prazosin EP Impurity A, Terazosin-001, Doxazosin EP Impurity F, Alfuzosin EP Impurity B, TIMTEC-BB SBB000787, MFCD00051734, EINECS 245-821-7

2-Chloro-4-amino-6,7-dimethoxyquinazoline (CAS 23680-84-4) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C10H10ClN3O2 and a molecular weight of 239.658 g/mol. Key properties include a melting point of 262-268 °C (dec.)(lit.), a boiling point of 374.0±42.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 180.0±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.: 23680-84-4
Jingsj CID: J-1515901-0
Molecular Formula: C₁₀H₁₀ClN₃O₂
Molecular Weight: 239.658 g/mol
Category: Organohalogen Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	262-268 °C (dec.)(lit.)
Boiling Point	374.0±42.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	180.0±27.9 °C
Exact Mass	239.046158
PSA	70.26000
LogP	1.54
Vapor Pressure	0.0±0.8 mmHg at 25°C
Refractive Index	1.649

GHS Safety & Compliance

IrritantSignal word: Warning

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-Chloro-4-amino-6,7-dimethoxyquinazoline?

The CAS number of 2-Chloro-4-amino-6,7-dimethoxyquinazoline is 23680-84-4.

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

2-Chloro-4-amino-6,7-dimethoxyquinazoline has molecular formula C10H10ClN3O2 and molecular weight 239.658 g/mol.

Is 2-Chloro-4-amino-6,7-dimethoxyquinazoline hazardous?

2-Chloro-4-amino-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-Chloro-4-amino-6,7-dimethoxyquinazoline?

For 2-Chloro-4-amino-6,7-dimethoxyquinazoline, Upstream Products: 2,4-Dichloro-6,7-dimethoxyquinazoline, Methyl 3,4-dimethoxybenzoate, Methyl 4,5-dimethoxy-2-nitrobenzoate; Downstream Products: Alfuzosin hydrochloride, Alfuzosin, 2-(Piperazin-1-yl)-6,7-dimethoxyquinazolin-4-amine hydrochloride.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2-Chloro-4-amino-6,7-dimethoxyquinazoline (CAS 23680-84-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1515901-0 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.