Ethambutol

Also known as: EMB, Myambutol, (+)-Ethambutol, (2S,2'S)-2,2'-(1,2-ethanediyldiimino)bis(1-butanol), (+)-2,2'-(ethylenediimino)di-1-butanol, (+)-N,N'-bis(1-hydroxymethylpropyl)ethylenediamine, D-ethambutol, Etambutol, Diambutol, Tibutol

Ethambutol (CAS 74-55-5) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C10H24N2O2 and a molecular weight of 204.310 g/mol. Key properties include a melting point of 199 - 204ºC, a boiling point of 345.3±22.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 113.7±12.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 74-55-5
Jingsj CID: J-43708-2
Molecular Formula: C₁₀H₂₄N₂O₂
Molecular Weight: 204.310 g/mol
Category: Organic Bases
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	199 - 204ºC
Boiling Point	345.3±22.0 °C at 760 mmHg
Density	1.0±0.1 g/cm3
Flash Point	113.7±12.9 °C
Exact Mass	204.183777
PSA	64.52000
LogP	-0.05
Vapor Pressure	0.0±1.7 mmHg at 25°C
Refractive Index	1.478
Storage Conditions	2-8℃

Activity & Biological Data

Additional Information	[1]. Ethambutol. Tuberculosis (Edinb), 2008. 88(2): p. 102-5. [2]. Rastogi, N., V. Labrousse, and K.S. Goh, In vitro activities of fourteen antimicrobial agents against drug susceptible and resistant clinical isolates of Mycobacterium tuberculosis and comparative intracellular activities against the virulent H37Rv strain [3]. Kaur, D. and G.K. Khuller, In vitro, ex-vivo and in vivo activities of ethambutol and sparfloxacin alone and in combination against mycobacteria. Int J Antimicrob Agents, 2001. 17(1): p. 51-5.

Additional Information

[1]. Ethambutol. Tuberculosis (Edinb), 2008. 88(2): p. 102-5. [2]. Rastogi, N., V. Labrousse, and K.S. Goh, In vitro activities of fourteen antimicrobial agents against drug susceptible and resistant clinical isolates of Mycobacterium tuberculosis and comparative intracellular activities against the virulent H37Rv strain [3]. Kaur, D. and G.K. Khuller, In vitro, ex-vivo and in vivo activities of ethambutol and sparfloxacin alone and in combination against mycobacteria. Int J Antimicrob Agents, 2001. 17(1): p. 51-5.

Customs & Trade Information

HS Code	2922191000

Frequently Asked Questions

What is the CAS number of Ethambutol?

The CAS number of Ethambutol is 74-55-5.

What are the molecular formula and molecular weight of Ethambutol?

Ethambutol has molecular formula C10H24N2O2 and molecular weight 204.310 g/mol.

What are the upstream and downstream products of Ethambutol?

For Ethambutol, Upstream Products: (S)-2-Amino-1-butanol, 1,2-dichloroethane, 1,2-Dibromoethane.

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. "Ethambutol (CAS 74-55-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-43708-2 (accessed 2026-11-06).

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