3-Amino-2-methyl-4(3H)-quinazolinone

Also known as: 2-Methyl-3-amino-4-quinazolone, 2-Methyl-3-amino-4-quinazolinone, 3-Amino-2-methyl-4(3H)-quinazolinone, 3-AMINO-2-METHYL-3 H-QUINAZOLIN-4-ONE, 3-AMINO-2-METHYL-3,4-DIHYDROQUINAZOLIN-4-ONE, 3-AMINO-2-METHYL-4(3H)QUINAZOLINONE, 3-amino-2-methyl-3,4-dihydro-4-quinazolone, 3-amino-2-methyl-3,4-dihydroquinazolin-4-one, 3-amino-2-methyl-3-hydroquinazolin-4-one, 3-amino-2-methylquinazolin-4-one, AKOS AU36-M15, AKOS B028736, ASISCHEM W61338, IFLAB-BB F0307-0682, MFCD00114253

3-Amino-2-methyl-4(3H)-quinazolinone (CAS 1898-06-2) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H9N3O and a molecular weight of 175.18700 g/mol. Key properties include a melting point of 149-152 °C(lit.), a boiling point of 348.1ºC at 760mmHg, a density of 1.35g/cm3 and a flash point of 164.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1898-06-2
Jingsj CID: J-23686-2
Molecular Formula: C₉H₉N₃O
Molecular Weight: 175.18700 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	149-152 °C(lit.)
Boiling Point	348.1ºC at 760mmHg
Density	1.35g/cm3
Flash Point	164.4ºC
Exact Mass	175.07500
PSA	60.91000
LogP	0.99990

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 3-Amino-2-methyl-4(3H)-quinazolinone?

The CAS number of 3-Amino-2-methyl-4(3H)-quinazolinone is 1898-06-2.

What are the molecular formula and molecular weight of 3-Amino-2-methyl-4(3H)-quinazolinone?

3-Amino-2-methyl-4(3H)-quinazolinone has molecular formula C9H9N3O and molecular weight 175.18700 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. "3-Amino-2-methyl-4(3H)-quinazolinone (CAS 1898-06-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23686-2 (accessed 2026-11-09).

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