7-chloro-3,4-dihydroquinoxalin-2(1H)-one

7-氯-3,4-二氢喹喔啉-2(1H)-酮

Also known as: 2(1H)-Quinoxalinone,7-chloro-3,4-dihydro-, 7-CHLORO-3,4-DIHYDRO-1H-QUINOXALIN-2-ONE, 7-Chlor-3,4-dihydro-1H-chinoxalin-2-on, 7-chloro-3,4-dihydro-1h-quinoxalin-2-one, 7-chloro-3,4-dihydroquinoxalin-2(1h)-one

7-chloro-3,4-dihydroquinoxalin-2(1H)-one (CAS 66367-05-3) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H7ClN2O and a molecular weight of 182.60700 g/mol. It is also known as 2(1H)-Quinoxalinone,7-chloro-3,4-dihydro-, 7-CHLORO-3,4-DIHYDRO-1H-QUINOXALIN-2-ONE and 7-Chlor-3,4-dihydro-1H-chinoxalin-2-on. Key properties include a melting point of 214-215 °C(decomp), a boiling point of 386.8ºC at 760mmHg, a density of 1.335g/cm3 and a flash point of 187.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
66367-05-3
Jingsj CID
J-1480707-7
Molecular Formula
C8H7ClN2O
Chinese Name
7-氯-3,4-二氢喹喔啉-2(1H)-酮
Molecular Weight
182.60700 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Melting Point214-215 °C(decomp)
Boiling Point386.8ºC at 760mmHg
Density1.335g/cm3
Flash Point187.7ºC

Frequently Asked Questions

What is the CAS number of 7-chloro-3,4-dihydroquinoxalin-2(1H)-one?

The CAS number of 7-chloro-3,4-dihydroquinoxalin-2(1H)-one is 66367-05-3.

What are the molecular formula and molecular weight of 7-chloro-3,4-dihydroquinoxalin-2(1H)-one?

7-chloro-3,4-dihydroquinoxalin-2(1H)-one has molecular formula C8H7ClN2O and molecular weight 182.60700 g/mol.

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

Last updated:

How to cite: Jingsj. "7-chloro-3,4-dihydroquinoxalin-2(1H)-one (CAS 66367-05-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1480707-7 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.