Ethyl 4-(5-amino-1-methyl-1H-benzimidazol-2-yl)butanoate

5-氨基-1-甲基-1H-苯并咪唑-2-丁酸乙酯

Also known as: 1-Methyl-5-amino-1H-benzimidazole-2-butanoic acid ethyl ester, 4-(5-Amino-1-methyl-1H-benzimidazol-2-yl)butanoic acid ethyl ester, 5-Amino-1-methyl-2-benzimidazolebutyric acid ethyl ester, Ethyl 4-(5-amino-1-methyl-1H-benzo[d]imidazol-2-yl)butanoate, Bendamustine intermediate

Ethyl 4-(5-amino-1-methyl-1H-benzimidazol-2-yl)butanoate (CAS 3543-73-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C14H19N3O2 and a molecular weight of 261.320 g/mol. It is also known as 1-Methyl-5-amino-1H-benzimidazole-2-butanoic acid ethyl ester, 4-(5-Amino-1-methyl-1H-benzimidazol-2-yl)butanoic acid ethyl ester and 5-Amino-1-methyl-2-benzimidazolebutyric acid ethyl ester. Key properties include a melting point of 130-135ºC, a boiling point of 471.6±25.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 239.0±23.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
3543-73-5
Jingsj CID
J-1063331-7
Molecular Formula
C14H19N3O2
Chinese Name
5-氨基-1-甲基-1H-苯并咪唑-2-丁酸乙酯
Molecular Weight
261.320 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point130-135ºC
Boiling Point471.6±25.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point239.0±23.2 °C

Frequently Asked Questions

What is the CAS number of Ethyl 4-(5-amino-1-methyl-1H-benzimidazol-2-yl)butanoate?

The CAS number of Ethyl 4-(5-amino-1-methyl-1H-benzimidazol-2-yl)butanoate is 3543-73-5.

What are the molecular formula and molecular weight of Ethyl 4-(5-amino-1-methyl-1H-benzimidazol-2-yl)butanoate?

Ethyl 4-(5-amino-1-methyl-1H-benzimidazol-2-yl)butanoate has molecular formula C14H19N3O2 and molecular weight 261.320 g/mol.

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

Last updated:

How to cite: Jingsj. "Ethyl 4-(5-amino-1-methyl-1H-benzimidazol-2-yl)butanoate (CAS 3543-73-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1063331-7 (accessed 2026-10-22).

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