1-Ethyl-3,4-dihydro-3-methyl-3-isoquinolinecarboxylic acid

1-乙基-3,4-二氢-3-甲基-3-异喹啉羧酸

Also known as: 1-ethyl-3-methyl-4H-isoquinoline-3-carboxylic acid, 1-Ethyl-3-methyl-3,4-dihydroisoquinoline-3-carboxylic acid, 3-Isoquinolinecarboxylic acid, 1-ethyl-3,4-dihydro-3-methyl- (9CI)

1-Ethyl-3,4-dihydro-3-methyl-3-isoquinolinecarboxylic acid (CAS 803633-81-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C13H15NO2 and a molecular weight of 217.26400 g/mol. It is also known as 1-ethyl-3-methyl-4H-isoquinoline-3-carboxylic acid, 1-Ethyl-3-methyl-3,4-dihydroisoquinoline-3-carboxylic acid and 3-Isoquinolinecarboxylic acid, 1-ethyl-3,4-dihydro-3-methyl- (9CI). Key properties include a boiling point of 317.1ºC at 760 mmHg, a density of 1.133 g/cm3 and a flash point of 145.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
803633-81-0
Jingsj CID
J-1491845-2
Molecular Formula
C13H15NO2
Chinese Name
1-乙基-3,4-二氢-3-甲基-3-异喹啉羧酸
Molecular Weight
217.26400 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point317.1ºC at 760 mmHg
Density1.133 g/cm3
Flash Point145.6ºC

Frequently Asked Questions

What is the CAS number of 1-Ethyl-3,4-dihydro-3-methyl-3-isoquinolinecarboxylic acid?

The CAS number of 1-Ethyl-3,4-dihydro-3-methyl-3-isoquinolinecarboxylic acid is 803633-81-0.

What are the molecular formula and molecular weight of 1-Ethyl-3,4-dihydro-3-methyl-3-isoquinolinecarboxylic acid?

1-Ethyl-3,4-dihydro-3-methyl-3-isoquinolinecarboxylic acid has molecular formula C13H15NO2 and molecular weight 217.26400 g/mol.

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

Last updated:

How to cite: Jingsj. "1-Ethyl-3,4-dihydro-3-methyl-3-isoquinolinecarboxylic acid (CAS 803633-81-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1491845-2 (accessed 2026-10-23).

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