Umifenovir hydrochloride

盐酸阿比多尔

Also known as: Arbidol hydrochloride, Arbidol HCl, Arbidol hydrochloride hydrate, Ethyl 6-bromo-4-[(dimethylamino)methyl]-5-hydroxy-1-methyl-2-[(phenylthio)methyl]-1H-indole-3-carboxylate monohydrochloride, Ethyl 6-bromo-4-[(dimethylamino)methyl]-5-hydroxy-1-methyl-2-[(phenylsulfanyl)methyl]-1H-indole-3-carboxylate hydrochloride (1:1), 6-Bromo-4-[(dimethylamino)methyl]-5-hydroxy-1-methyl-2-[(phenylthio)methyl]-1H-indole-3-carboxylic acid ethyl ester monohydrochloride, 1H-Indole-3-carboxylic acid, 6-bromo-4-[(dimethylamino)methyl]-5-hydroxy-1-methyl-2-[(phenylthio)methyl]-, ethyl ester, hydrochloride (1:1), MFCD00333871

Umifenovir hydrochloride (CAS 131707-23-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C22H26BrClN2O3S and a molecular weight of 513.875 g/mol. It is also known as Arbidol hydrochloride, Arbidol HCl and Arbidol hydrochloride hydrate. Key properties include a melting point of 133-137ºC, a boiling point of 591.8ºC at 760 mmHg and a flash point of 311.7℃. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
131707-23-8
Jingsj CID
J-1975721-2
Molecular Formula
C22H26BrClN2O3S
Chinese Name
盐酸阿比多尔
Molecular Weight
513.875 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point133-137ºC
Boiling Point591.8ºC at 760 mmHg
Flash Point311.7℃
Exact Mass512.053589
PSA80.00000
LogP5.97900
Vapor Pressure1.34E-14mmHg at 25°C
Storage ConditionsHygroscopic, Refrigerator, Under Inert Atmosphere
StabilityHygroscopic

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation

Activity & Biological Data

Additional Information[1]. Shi L, et al. Antiviral activity of arbidol against influenza A virus, respiratory syncytial virus, rhinovirus, coxsackie virus and adenovirus in vitro and in vivo. Arch Virol. 2007;152(8):1447-55. [2]. Teissier E, et al. Mechanism of inhibition of enveloped virus membrane fusion by the antiviral drug arbidol. PLoS One. 2011 Jan 25;6(1):e15874. [3]. Zhong Q, et al. Antiviral activity of Arbidol against Coxsackie virus B5 in vitro and in vivo. Arch Virol. 2009;154(4):601-7.

Customs & Trade Information

HS Code2933990090
Summary2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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 Umifenovir hydrochloride?

The CAS number of Umifenovir hydrochloride is 131707-23-8.

What are the molecular formula and molecular weight of Umifenovir hydrochloride?

Umifenovir hydrochloride has molecular formula C22H26BrClN2O3S and molecular weight 513.875 g/mol.

Is Umifenovir hydrochloride hazardous?

Umifenovir hydrochloride has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation.

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

Last updated:

How to cite: Jingsj. "Umifenovir hydrochloride (CAS 131707-23-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1975721-2 (accessed 2026-10-28).

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