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

Product Name: 2-Chloro-4-amino-6,7-dimethoxyquinazoline
CAS No.: 23680-84-4
Chemical Name: 2-Chloro-4-amino-6,7-dimethoxyquinazoline
Synonyms: 2-CHLORO-6,7-DIMETHOXYQUINAZOLIN-4-AMINE;4-AMINO-2-CHLORO-6,7-DIMETHOXYQUINAZOLINE;QUINAZOLINAMINE;2-CHLORO-6,7-DIMETHOXY-4-QUINAZOLINAMINE;ACDQ;Terazosin-001;2-Chloro-4-AMino-6;TIMTEC-BB SBB000787;Prazosin EP Impurity A;7-DiMethoxy-Quinazoline
CBNumber: CB8264136
Molecular Formula: C10H10ClN3O2
Formula Weight: 239.66
MOL File: 23680-84-4.mol

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

Melting point:: 262-268 °C (dec.)(lit.)
Boiling point:: 374.0±42.0 °C(Predicted)
Density: 1.5062 (rough estimate)
vapor pressure: 0Pa at 25℃
refractive index: 1.5500 (estimate)
storage temp.: 2-8°C
solubility: DMSO (Sparingly, Heated), Methanol (Slightly, Heated)
form: Solid
pka: 4.35±0.30(Predicted)
color: White to Off-White
Water Solubility: 1.418g/L at 25℃
BRN: 747463
Major Application: pharmaceutical (small molecule)
InChI: 1S/C10H10ClN3O2/c1-15-7-3-5-6(4-8(7)16-2)13-10(11)14-9(5)12/h3-4H,1-2H3,(H2,12,13,14)
InChIKey: HWIIAAVGRHKSOJ-UHFFFAOYSA-N
SMILES: COc1cc2nc(Cl)nc(N)c2cc1OC
LogP: 1.5 at 25℃
CAS DataBase Reference: 23680-84-4(CAS DataBase Reference)
NIST Chemistry Reference: 4-Amino-2-chloro-6,7-dimethoxyquinazoline(23680-84-4)

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Safety

Hazard Codes: Xi,Xn
Risk Statements: 36/37/38-20/21/22
Safety Statements: 26-36-37/39
WGK Germany: 3
F: 10
HazardClass: IRRITANT
HS Code: 29339900
Storage Class: 13 - Non Combustible Solids
Hazard Classifications: Eye Irrit. 2
Skin Irrit. 2
STOT SE 3

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: Y0000552
Product name: Doxazosin impurity F
Purity: European Pharmacopoeia (EP) Reference Standard
Packaging: 15 mg
Price: $225
Updated: 2025/07/31

Sigma-Aldrich

Product number: PHR3308
Product name: Doxazosin Related Compound C
Purity: certified reference material, pharmaceutical secondary standard
Packaging: 50MG
Price: $651
Updated: 2025/07/31

Sigma-Aldrich

Product number: 518654
Product name: 4-Amino-2-chloro-6,7-dimethoxyquinazoline
Purity: 95%
Packaging: 25g
Price: $85.8
Updated: 2025/07/31

Sigma-Aldrich

Product number: 1225452
Product name: Doxazosin Related Compound C
Purity: United States Pharmacopeia (USP) Reference Standard
Packaging: 20mg
Price: $1300
Updated: 2025/07/31

TCI Chemical

Product number: A2151
Product name: 4-Amino-2-chloro-6,7-dimethoxyquinazoline
Purity: >98.0%(HPLC)(N)
Packaging: 5g
Price: $42
Updated: 2025/07/31

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2-Chloro-4-amino-6,7-dimethoxyquinazoline Chemical Properties,Usage,Production

Chemical Properties

Off-White Solid

Uses

Intermediate in the production on Terazosin.

Synthesis Reference(s)

Journal of Medicinal Chemistry, 20, p. 146, 1977 DOI: 10.1021/jm00211a031

Flammability and Explosibility

Non flammable

2-Chloro-4-amino-6,7-dimethoxyquinazoline Preparation Products And Raw materials

Raw materials

Preparation Products

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

Americas 1 Austria 1 Belgium 3 Canada 3 China 309 Europe 4 France 3 Germany 9 India 89 Italy 1 Japan 5 Slovakia 1 Spain 1 Switzerland 5 The Netherlands 2 Ukraine 1 United Kingdom 21 United States 74 Global 533

Ningbo jinuo chemical co., LTD

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INTATRADE GmbH

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TCI (Shanghai) Development Co., Ltd.

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Ark Pharm, Inc.

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Country: United States
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View Lastest Price from 2-Chloro-4-amino-6,7-dimethoxyquinazoline manufacturers

Shaanxi Dideu New Materials Co. Ltd

Product: 2-Chloro-4-amino-6,7-dimethoxyquinazoline 23680-84-4
Price: US $0.00-0.00/KG
Min. Order: 1KG
Purity: 98
Supply Ability: 10000KGS
Release date: 2025-12-15

Shaanxi Dideu Medichem Co. Ltd

Product: 4-Amino-2-chloro-6,7-dimethoxyquinazoline 23680-84-4
Price: US $0.00-0.00/kG
Min. Order: 1kG
Purity: 99%
Supply Ability: 1000KG
Release date: 2025-09-24

Henan Aochuang Chemical Co.,Ltd.

Product: 2-Chloro-4-amino-6,7-dimethoxyquinazoline 23680-84-4
Price: US $0.00-0.00/kg
Min. Order: 1kg
Purity: 98%
Supply Ability: 1Ton
Release date: 2022-09-22

23680-84-4, 2-Chloro-4-amino-6,7-dimethoxyquinazolineRelated Search:

4-Dimethylaminobenzoic acid 6-Aminocaproic acid Dimethyldimethoxysilane 4-Dimethylaminopyridine 4-Dimethylaminobenzaldehyde Triallylamine Dibenzylamine Bis(2-ethylhexyl)amine ALTRENOGEST 3-Aminophenol Triethanolamine Tris(hydroxymethyl)aminomethane Glycine Terazosin impurity 2-Piperazine-4-amino-6,7-dimethoxyquinazoline (R)-Terazosin 2,2'-(1,4-Piperazinediyl)bis[6,7-diMethoxy-4-quinazolinaMine] 1-[4-(4-AMino-6,7-diMethoxy-2-quinazolinyl)-1-piperazinyl]-5-hydroxy-1-pentanone

QUINAZOLINAMINE

TIMTEC-BB SBB000787

4-Quinazolinamine, 2-chloro-6,7-dimethoxy-

4-AMINO-2-CHLORO-6,7-DIMETHOXYQUINAZOLINE

4-AMINO-2-CHLORO-6,7-DIMETHOXYQUINOZOLINE

4-AMINO-2-CHLORO-6,7-DIMETHOXY-QUINZOLINE

2-CHLORO-4-AMINO-6,7-DIMETHOXYQUINAZOLINE

2-CHLORO-6,7-DIMETHOXY-4-AMINOQUINAZOLINE

2-CHLORO-6,7-DIMETHOXY-4-QUINAZOLINAMINE

2-CHLORO-6,7-DIMETHOXYQUINAZOLIN-4-AMINE

2-CHLORO-6,7-DIMETHOXY-QUINAZOLIN-4-YLAMINE

2-CHLORO-6,7-DIMETHOXYQUINAZOLINE-4-AMINE

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

4-Amino-2-chloro-6,7-dimethoxy

2-chloro-4-amino-6,7-dimethoxyquinazoline (intermediate of terazosin)

2-CHLORO-4-AMINO-6,7-DIMETHOXYLQUINAZOLINE

4-Amino-2-chloro-6,7-dimethoxy quinezoline

4-AMINO-2-CHLOR-6,7-DIMETHOXY-CHINAZOLIN

4-Amino-2-Chloro-6,7-Dimethoxyquinoline

2-Chloro-4-Amino-6,7-Dimethoxyquinazoline99%

4-Amino-2-chloro-6,7-dimethoxyquinazoline, 98+%

Prazosin EP Impurity A

Terazosin-001

Terazosin Impurity 1(Terazosin EP Impurity A)

4-AMINO-2-CHLORO-6,7-DIMETHOXYQUINAZOLINE/ MOLSIDOMINE

2-Chloro-4-amino-6,7-dimethoxyquinazoline, 4-Amino-2-chloro-6,7-dimethoxyquinazoline, 2-Chloro-6,7-dimethoxyquinazolin-4-amine

4-AMINO-2-CHLORO-6,7-DIMETHOXYQUINAZOLINE 99.5%

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

2-CHLORO-4-AMINO-6,7-DIMETHOXYQUINAZOLINETERAZOSIN

2-chloro-4-amino-6,7-dimetoxy quinazoline

4-Amino-2-chloro-6,7-dimethoxyquinazoline,97%

6,7-Dimethyoxy-2-chloro-4-quinazolinamine

2-Chloro-4-AMino-6

7-DiMethoxy-Quinazoline

Doxazosin Related Compound C (20 mg) (2-chloro-4-amino-6,7-dimethoxyquinazoline)

4-AMino-2-chloro-6,7-diMethoxyquinazolin

Terazosin EP IMpurity A

Doxazosin Related CoMpound C

Doxazosin EP Impurity F

Alfuzosin EP Impurity B

Alfuzosin Impurity 2（Alfuzosin EP Impurity B）

AMINO-2-CHLORO-6,7-DIMETHOXYQUINAZOLINE

2-Chlor-6,7-dimethoxychinazolin-4-amin

Doxazosin Impurity 6（Doxazosin EP Impurity F）

2-Chloro-4-amino-6,7-dimethoxyquinazoline Factory in stock

Terazosin Hydrochloride Impurity Ⅱ：2-Chloro-4-amino-6,7-dimethoxyquinazoline

2-chloro-6,7-dimethyl-4-quinazolinamine

Prazosin Impurity 1(Prazosin EP Impurity A)

Terazosin EP Impurity A (Alfuzosin EP Impurity B, Prazosin EP Impurity A)

Prazosin EP Impurity A (Terazosin EP Impurity A)

Terazosin impurity A CRS

4-Amino-2-chloro-6,7-dimethoxyquinazoline &gt

Doxazosin impurity F CRS

2-Chloro-6,7-dimethoxyquinazolin-4-

4-Amino-2-Chloro-6,7-Dimetoxy Quinazoline

Terazosin EP Impurity A （Doxazosin EP Impurity F）

DOXAZOSIN IMPURITY F USP/EP/BP

2-Chloro-4-amino-6,7-dimethoxyquinazoline ISO 9001：2015 REACH