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Arbidol

CAS No.
131707-25-0
Chemical Name:
Arbidol
Synonyms
UMifenovir;ethyl 6-bromo-4-[(dimethylamino)methyl]-5-hydroxy-1-methyl-2-(phenylsulfanylmethyl)indole-3-carboxylate;Ethyl 6-bromo-5-hydroxy-1-methyl-4-((dimethylamino)methyl)-2-[(phenylthio)methyl]-1H-indole-3-carboxylate;Arbidol;2H6]-Umifenovir;Arbidol USP/EP/BP;Arbidol?(Umifenovir);Abbidore intermediate 6;Arbidol Pills Umifenovir;Arbidol CAS NO.131707-25-0
CBNumber:
CB6946906
Molecular Formula:
C22H25BrN2O3S
Molecular Weight:
477.41
MDL Number:
MFCD01326495
MOL File:
131707-25-0.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-05-12 09:20:59

Arbidol Properties

Boiling point 591.8±50.0 °C(Predicted)
Density 1.37±0.1 g/cm3(Predicted)
storage temp. -20°C Freezer, Under inert atmosphere
solubility Chloroform (Slightly), Methanol (Slightly, Heated)
form Solid
pka 6.02±0.50(Predicted)
color Pale Brown to Light Brown
InChI InChI=1S/C22H25BrN2O3S/c1-5-28-22(27)20-18(13-29-14-9-7-6-8-10-14)25(4)17-11-16(23)21(26)15(19(17)20)12-24(2)3/h6-11,26H,5,12-13H2,1-4H3
InChIKey KCFYEAOKVJSACF-UHFFFAOYSA-N
SMILES N1(C)C2=C(C(CN(C)C)=C(O)C(Br)=C2)C(C(OCC)=O)=C1CSC1=CC=CC=C1
FDA UNII 93M09WW4RU
ATC code J05AX13

SAFETY

Risk and Safety Statements

REACH Registrations Active

Arbidol price More Price(31)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
TRC TRC-U850185-5MG Umifenovir >95%(HPLC) 131707-25-0 5mg $68 2026-06-03 Buy
TRC TRC-U850185-50MG Umifenovir >95%(HPLC) 131707-25-0 50mg $291 2026-06-03 Buy
TRC TRC-U850185-100MG Umifenovir >95%(HPLC) 131707-25-0 100mg $515 2026-06-03 Buy
Biosynth AU176627 Umifenovir 131707-25-0 5mg $208 2026-06-04 Buy
Biosynth AU176627 Umifenovir 131707-25-0 10mg $332.8 2026-06-04 Buy
Product number Packaging Price Buy
TRC-U850185-5MG 5mg $68 Buy
TRC-U850185-50MG 50mg $291 Buy
TRC-U850185-100MG 100mg $515 Buy
AU176627 5mg $208 Buy
AU176627 10mg $332.8 Buy

Arbidol Chemical Properties, Uses, Production

Description

Arbidol, or umifenovir, an indole-derivative with broad-spectrum activity against both enveloped and non-enveloped viruses,was initially approved in China and Russia for the treatment of influenza A and B.Arbidol is believed to block the entry of influenza virus (A and B) into the host cells by increasing the stability of the hemagglutinin (HA) and hampering low pH reorganizations necessary for fusion machinery of hemagglutinin with the membrane.Arbidol could interfere with advanced stages of the viral life cycle, in that it is capable of interacting with both viral proteins and lipids.Regarding its structure, the presence of amine in position 4 and the hydroxyl moiety in position 5 is crucial for its antiviral activity. It is reported that 40% of the drug could be excreted unchanged after the administration while its half-life is between 17 and 21h.

Uses

Umifenovir is an intermediate in synthesizing Arbidol Sulfoxide (A766005), a metabolite of Arbidol (A766000) which is a medicinal agent for treating viral infections.

Definition

ChEBI: Umifenovir is an indolyl carboxylic acid.

Biological Activity

Arbidol Arbidol is a broad spectrum antiviral. Displays activity against a range of respiratory and hepatitis viruses including influenza A, B and C, adenovirus, and hepatitis B and C. Increases stability of influenza viral hemagglutinins (HA) and prevents low-pH HA transition so inhibiting viral fusion. Also inhibits SARS-CoV-2 infection in vitro (IC50 = 4.11 μM).

Mechanism of action

Probable Mechanism of Action
lt is hypothesized that arbidol inhibits the contact between the virus and host cell that further prevents the entry of the virus into host cells. It is also being predicted that arbidol also interferes with the late stages of virus cycle by interacting with lipids and proteins of the virus which are essential for the viral replication;probably arbidol binds with these essential components that further inhibit viral replication (Boriskin et al., 2008).
Umifenovir inhibits membrane fusion.Umifenovir prevents contact between the virus and target host cells. Fusion between the viral envelope (surrounding the viral capsid) and the cell membrane of the target cell is inhibited. This prevents viral entry to the target cell, and therefore protects it from infection.
Some evidence suggests that the drug’s actions are more effective at preventing infections from RNA viruses than infections from DNA viruses.
As well as specific antiviral action against both influenza A and influenza B viruses, umifenovir exhibits modulatory effects on the immune system. The drug stimulates a humoral immune response, induces interferon-production, and stimulates the phagocytic function of macrophages.
https://newdrugapprovals.org

Clinical Use

Arbidol in Treatment of covID-19
Although,arbidol is not approved by US-FDA for the treatment of cOVID-19,some pre-clinical and clinical studies have reported that it may be a very efficacious therapeutic molecule for COVID-19 (Deng et al.,2020; Wang et al.,2020).Arbidol has been included in the latest version of the guidelines issued by the National Health Commission (NHC) of the people's republic of China for the prevention, diagnosis, and treatment of novel coronavirus induced pneumonia at the recommended dose of 200 mg, 3 times/day for 10 days for adults (National Health Commission,China).
An in-vitro study claimed that arbidol is effective against COVID-19 at the concentration range of 10-30 uM (News: Abidol and darunavir can effectively inhibit corona virus (2020). A retrospective study conducted by Deng and colleagues reported that patients who received oral arbidol plus lopinavir/ritonavir showed improvement in clinical symptoms and reduced viral load as a compared to the patients who received lopinavir/ritonavir alone (Deng et al.,2020).A randomized multi-centre controlled clinical trial of arbidol in the patients with cOVID-19 is currently running in China (ChiCTR2000029573).
Besides this, one more study was conducted on 69 patients of COVID-19.In this study, it was reported that the administration of arbidol at the dose of 0.4 g,TID for 9 days improves the discharging rate from the hospital and also decreases the mortality rate of patients (Wang et al.,2020). In addition,another study also reported that arbidol is more superior to the combination therapy of lopinavir/ritonavir (Zhu et al.,2020).
Arbidol: a broad-spectrum antiviral compound that blocks viral fusion
Arbidol: A potential antiviral drug for the treatment of SARS-CoV-2 by blocking trimerization of the spike glycoprotein

50-00-0
124-40-3
131707-24-9
131707-25-0
Synthesis of Arbidol from Formaldehyde and Dimethylamine and Ethyl 6-bromo-5-hydroxy-1-methyl-2-(phenylsulfanylmethyl)indole-3-carboxylate
Global Suppliers ( 185)
Supplier Tel Email Country ProdList Advantage
Hubei jian chu biological technology co., LTD 027-027-65021350 18164064948 yuan18164064948@foxmail.com China 581 58
Shandong Jiecheng Pharmaceutical Co., Ltd 0531-83130525 18560095177 lily.chen@jiechengpharm.com China 25 58
Shanghai Boyle Chemical Co., Ltd. sales@boylechem.com China 2915 55
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
Beijing Mediking Biopharm Co., Ltd 010-81769521,89753524,81760121 15901403431 sales01@mediking.cn China 100 68
LGM Pharma 1-(800)-881-8210 inquiries@lgmpharma.com United States 2110 70
Shanghai Longsheng chemical Co.,Ltd. 58099637 13585536065 sales@shlschem.com China 9880 59
XiaoGan ShenYuan ChemPharm co,ltd 15527621225; 15527621225 1791901229@qq.com China 6742 52
Nanjing Vital Chemical Co., Ltd. Please Send Email 18652950785 chemweiao@163.com China 4368 65
S.Z. PhyStandard Bio-Tech. Co., Ltd. 0755-83725681-603 China 4484 50

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View Latest Price from Arbidol manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Arbidol USP/EP/BP pictures 2026-08-20 Arbidol USP/EP/BP
131707-25-0
$1.10 1g 99.9% 100 Tons Min Dideu Industries Group Limited
Arbidol pictures 2024-11-26 Arbidol
131707-25-0
1kg 99%HPLC 20 tons Nanjing Fred Technology Co., Ltd
Umifenovir pictures 2023-08-16 Umifenovir
131707-25-0
$80.00 1KG >99% 20tons Weijer International Trade (Hebei) Co., Ltd
  • Arbidol pictures
  • Arbidol
    131707-25-0
  • 99%HPLC
  • Nanjing Fred Technology Co., Ltd
  • Umifenovir pictures
  • Umifenovir
    131707-25-0
  • $80.00
  • >99%
  • Weijer International Trade (Hebei) Co., Ltd

Arbidol Spectrum

Arbidol Ethyl 6-bromo-5-hydroxy-1-methyl-4-((dimethylamino)methyl)-2-[(phenylthio)methyl]-1H-indole-3-carboxylate INTERMEDIATE:ARBIDOLHYDROCHLORIDE 1H-Indole-3-carboxylic acid, 6-bromo-4-((dimethylamino)methyl)-5-hydroxy-1-methyl-2-((phenylthio)methyl)-, ethyl ester ETHYL6-BROMO-4-((DIMETHYLAMINO)METHYL)-5-HYDROXY-1-METHYL. ethyl 6-bromo-4-[(dimethylamino)methyl]-5-hydroxy-1-methyl-2-(phenylsulfanylmethyl)indole-3-carboxylate ethyl 6-bromo-4-((dimethylamino)methyl)-5-hydroxy-1-methyl-2-((phenylthio)methyl)-1H-indole-3-carboxylate Arbidol Pills Umifenovir Arbidol USP/EP/BP 6-bromo-4-[(dimethylazaniumyl)methyl]-3-ethoxycarbonyl-1-methyl-2-(phenylsulfanylmethyl)indol-5-olate Arbidol CAS NO.131707-25-0 2H6]-Umifenovir Abbidore intermediate 6 Arbidol?(Umifenovir) UMifenovir 131707-25-0 C22H25BrN2O3S