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

Also known as: 3-Amino-2-ethyl-3,4-dihydroquinazolin-4-one, 3-Amino-2-ethylquinazolin-4(3H)-one, 3-Amino-2-ethylquinazolin-4-one, 3-Amino-2-ethylquinazoline-4(3H)-one, 2-Ethyl-3-aminoquinazolin-4-one, 4(3H)-Quinazolinone, 3-amino-2-ethyl-, MFCD00191734

3-Amino-2-ethyl-4(3H)-quinazolinone (CAS 50547-51-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C10H11N3O and a molecular weight of 189.21400 g/mol. Key property: a melting point of 121-123ºC(lit.). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 50547-51-8
Jingsj CID: J-5834-4
Molecular Formula: C₁₀H₁₁N₃O
Molecular Weight: 189.21400 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	121-123ºC(lit.)
Exact Mass	189.09000
PSA	60.91000
LogP	1.25390

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-ethyl-4(3H)-quinazolinone?

The CAS number of 3-Amino-2-ethyl-4(3H)-quinazolinone is 50547-51-8.

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

3-Amino-2-ethyl-4(3H)-quinazolinone has molecular formula C10H11N3O and molecular weight 189.21400 g/mol.

What are the upstream and downstream products of 3-Amino-2-ethyl-4(3H)-quinazolinone?

For 3-Amino-2-ethyl-4(3H)-quinazolinone, Upstream Products: Propionic anhydride, Methyl anthranilate, 2-Ethyl-4H-benzo[d][1,3]oxazin-4-one; Downstream Products: 2-Ethylquinazolin-4-ol.

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-ethyl-4(3H)-quinazolinone (CAS 50547-51-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-5834-4 (accessed 2026-11-09).

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