8-Chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-one

8-氯-5,6-二氢-11H-苯并[5,6]环庚[1,2-b]吡啶-11-酮

Also known as: Loratadine Impurity 2, Loratadine EP Impurity B, Loratadine Related Compound C (USP), 8-Chloro-10,11-dihydro-4-aza-5H-dibenzo[a,d]cycloheptan-5-one, 8-Chloro-10,11-dihydro-4-aza-5H-benzo[a,d]cycloheptan-5-one, MFCD00800222, 8-Chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-one

8-Chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-one (CAS 31251-41-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C14H10ClNO and a molecular weight of 243.68800 g/mol. It is also known as Loratadine Impurity 2, Loratadine EP Impurity B and Loratadine Related Compound C (USP). Key properties include a melting point of 90-92ºC, a boiling point of 433.6ºC at 760mmHg, a density of 1.313g/cm3 and a flash point of 216ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
31251-41-9
Jingsj CID
J-1062198-7
Molecular Formula
C14H10ClNO
Chinese Name
8-氯-5,6-二氢-11H-苯并[5,6]环庚[1,2-b]吡啶-11-酮
Molecular Weight
243.68800 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point90-92ºC
Boiling Point433.6ºC at 760mmHg
Density1.313g/cm3
Flash Point216ºC

Frequently Asked Questions

What is the CAS number of 8-Chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-one?

The CAS number of 8-Chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-one is 31251-41-9.

What are the molecular formula and molecular weight of 8-Chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-one?

8-Chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-one has molecular formula C14H10ClNO and molecular weight 243.68800 g/mol.

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

Last updated:

How to cite: Jingsj. "8-Chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-one (CAS 31251-41-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1062198-7 (accessed 2026-10-22).

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