5-Methoxyquinazoline-2,4-diamine

Also known as: 2,4-Diamino-5-methoxyquinazoline, 2,4-Diamino-5-methoxy-1,3-benzodiazine, 2,4-Quinazolinediamine, 5-methoxy-, 5-Methoxy-2,4-diaminoquinazoline, 5-Methoxy-2,4-quinazolinediamine, Brn 0746085

5-Methoxyquinazoline-2,4-diamine (CAS 27018-21-9) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C9H10N4O and a molecular weight of 190.20200 g/mol. Key properties include a boiling point of 484.8ºC at 760mmHg, a density of 1.372g/cm3 and a flash point of 247ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 27018-21-9
Jingsj CID: J-1446802-1
Molecular Formula: C₉H₁₀N₄O
Molecular Weight: 190.20200 g/mol
Category: Organic Bases
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	484.8ºC at 760mmHg
Density	1.372g/cm3
Flash Point	247ºC
Exact Mass	190.08500
PSA	87.05000
LogP	1.96520
Vapor Pressure	1.49E-09mmHg at 25°C
Refractive Index	1.732

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 5-Methoxyquinazoline-2,4-diamine?

The CAS number of 5-Methoxyquinazoline-2,4-diamine is 27018-21-9.

What are the molecular formula and molecular weight of 5-Methoxyquinazoline-2,4-diamine?

5-Methoxyquinazoline-2,4-diamine has molecular formula C9H10N4O and molecular weight 190.20200 g/mol.

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. "5-Methoxyquinazoline-2,4-diamine (CAS 27018-21-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1446802-1 (accessed 2026-11-09).

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