2-Aminoimidazole

Also known as: 1H-Imidazol-2-amine, 2-Amino-1H-imidazole

2-Aminoimidazole (CAS 7720-39-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C3H5N3 and a molecular weight of 83.092 g/mol. Key properties include a boiling point of 313.1±25.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 168.9±10.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 7720-39-0
Jingsj CID: J-1987163-7
Molecular Formula: C₃H₅N₃
Molecular Weight: 83.092 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	313.1±25.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	168.9±10.4 °C
Exact Mass	83.048347
PSA	54.70000
LogP	-0.59
Vapor Pressure	0.0±0.7 mmHg at 25°C
Refractive Index	1.648

Activity & Biological Data

Target	bacteria[1] Ki: 3.6 mM (human arginase I)[3]
Additional Information	[1]. Thompson RJ, et, al. Identification of BfmR, a response regulator involved in biofilm development, as a target for a 2-Aminoimidazole-based antibiofilm agent. Biochemistry. 2012 Dec 11;51(49):9776-8. [2]. Jacobs L, et, al. 2-Aminoimidazoles as potent inhibitors of contaminating brewery biofilms. Biofouling. 2021 Feb 11;1-17. [3]. Ilies M, et, al. 2-aminoimidazole amino acids as inhibitors of the binuclear manganese metalloenzyme human arginase I. J Med Chem. 2010 May 27;53(10):4266-76.

Target

bacteria[1] Ki: 3.6 mM (human arginase I)[3]

Additional Information

[1]. Thompson RJ, et, al. Identification of BfmR, a response regulator involved in biofilm development, as a target for a 2-Aminoimidazole-based antibiofilm agent. Biochemistry. 2012 Dec 11;51(49):9776-8. [2]. Jacobs L, et, al. 2-Aminoimidazoles as potent inhibitors of contaminating brewery biofilms. Biofouling. 2021 Feb 11;1-17. [3]. Ilies M, et, al. 2-aminoimidazole amino acids as inhibitors of the binuclear manganese metalloenzyme human arginase I. J Med Chem. 2010 May 27;53(10):4266-76.

Customs & Trade Information

HS Code	2933290090
Summary	2933290090. other compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 2-Aminoimidazole?

The CAS number of 2-Aminoimidazole is 7720-39-0.

What are the molecular formula and molecular weight of 2-Aminoimidazole?

2-Aminoimidazole has molecular formula C3H5N3 and molecular weight 83.092 g/mol.

What are the upstream and downstream products of 2-Aminoimidazole?

For 2-Aminoimidazole, Upstream Products: 2-Aminoimidazole hemisulfate; Downstream Products: 2-Nitroimidazole, 1-Methyl-1H-imidazol-2-amine.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2-Aminoimidazole (CAS 7720-39-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1987163-7 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.