4-[(4-Chlorophenyl)methyl]-2-[2-(1-methylpyrrolidin-2-yl)ethyl]phthalazin-1-one hydrochloride

4-[(4-氯苯基)甲基]-2-[2-(1-甲基-2-吡咯烷基)乙基]-1(2H)-酞嗪酮盐酸盐

Also known as: Azelastine 5-Member-Cyclic-Isomer HCl, Azelastine 5-Member-Cyclic-Isomer Hydrochloride, Azelastine Impurity 5 HCl, Azelastine Impurity 30, Azelastine Impurity 3, 4-(4-Chlorobenzyl)-2-(2-(1-methylpyrrolidin-2-yl)ethyl)phthalazin-1(2H)-one hydrochloride, 4-[(4-Chlorophenyl)methyl]-2-[2-(1-methyl-2-pyrrolidinyl)ethyl]-1(2H)-phthalazinone hydrochloride

4-[(4-Chlorophenyl)methyl]-2-[2-(1-methylpyrrolidin-2-yl)ethyl]phthalazin-1-one hydrochloride (CAS 117078-70-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C22H24ClN3O and a molecular weight of 381.89800 g/mol. It is also known as Azelastine 5-Member-Cyclic-Isomer HCl, Azelastine 5-Member-Cyclic-Isomer Hydrochloride and Azelastine Impurity 5 HCl. Key properties include a boiling point of 532.5ºC at 760mmHg, a density of 1.25g/cm3 and a flash point of 275.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
117078-70-3
Jingsj CID
J-1512551-0
Molecular Formula
C22H24ClN3O
Chinese Name
4-[(4-氯苯基)甲基]-2-[2-(1-甲基-2-吡咯烷基)乙基]-1(2H)-酞嗪酮盐酸盐
Molecular Weight
381.89800 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point532.5ºC at 760mmHg
Density1.25g/cm3
Flash Point275.8ºC

Frequently Asked Questions

What is the CAS number of 4-[(4-Chlorophenyl)methyl]-2-[2-(1-methylpyrrolidin-2-yl)ethyl]phthalazin-1-one hydrochloride?

The CAS number of 4-[(4-Chlorophenyl)methyl]-2-[2-(1-methylpyrrolidin-2-yl)ethyl]phthalazin-1-one hydrochloride is 117078-70-3.

What are the molecular formula and molecular weight of 4-[(4-Chlorophenyl)methyl]-2-[2-(1-methylpyrrolidin-2-yl)ethyl]phthalazin-1-one hydrochloride?

4-[(4-Chlorophenyl)methyl]-2-[2-(1-methylpyrrolidin-2-yl)ethyl]phthalazin-1-one hydrochloride has molecular formula C22H24ClN3O and molecular weight 381.89800 g/mol.

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

Last updated:

How to cite: Jingsj. "4-[(4-Chlorophenyl)methyl]-2-[2-(1-methylpyrrolidin-2-yl)ethyl]phthalazin-1-one hydrochloride (CAS 117078-70-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1512551-0 (accessed 2026-10-26).

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