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Clioquinol

Also known as: 5-chloro-7-iodoquinolin-8-ol, 5-chloro-8-hydroxy-7-iodoquinoline, 5-chloro-7-iodo-8-hydroxyquinoline, 5-chloro-7-iodo-8-quinolinol, 7-iodo-5-chloroxine, 8-quinolinol, 5-chloro-7-iodo-, iodochlorhydroxyquin, iodochlorohydroxyquinoline, vioform, entero-vioform, ala-quin, alchloquin, aleoquin, alioform, amebil, amoenol, bactol, cliochinolo, clioqinol, cliquinol

Clioquinol (CAS 130-26-7) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C9H5ClINO and a molecular weight of 305.500 g/mol. Key properties include a melting point of 175-183 °C, a boiling point of 350.4±37.0 °C at 760 mmHg, a density of 2.0±0.1 g/cm3 and a flash point of 165.7±26.5 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
130-26-7
Jingsj CID
J-49240-9
Molecular Formula
C9H5ClINO
Molecular Weight
305.500 g/mol
Category
Organohalogen Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point175-183 °C
Boiling Point350.4±37.0 °C at 760 mmHg
Density2.0±0.1 g/cm3
Flash Point165.7±26.5 °C
Exact Mass304.910431
PSA33.12000
LogP3.86
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.768
Additional Property<0.1 g/100 mL at 20 ºC

GHS Safety & Compliance

Acute ToxicitySignal word: Danger
  • H301 — Toxic if swallowed

Activity & Biological Data

Additional Information[1]. Nguyen T, et al. Clioquinol down-regulates mutant huntingtin expression in vitro and mitigates pathology in a Huntington's disease mouse model. Proc Natl Acad Sci U S A. 2005 Aug 16;102(33):11840-5. [2]. Cao B, et al. Clioquinol induces pro-death autophagy in leukemia and myeloma cells by disrupting the mTOR signaling pathway. Sci Rep. 2014 Jul 18;4:5749. [3]. Katsuyama M, et al. Clioquinol increases the expression of VGF, a neuropeptide precursor, through induction of c-Fos expression. J Pharmacol Sci. 2014;124(4):427-32. [4]. Matlack KE, et al. Clioquinol promotes the degradation of metal-dependent amyloid-β (Aβ) oligomers to restore endocytosis and ameliorate Aβ toxicity. Proc Natl Acad Sci U S A. 2014 Mar 18;111(11):4013-8.

Customs & Trade Information

HS Code2933499090
Summary2933499090. other compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused. 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 Clioquinol?

The CAS number of Clioquinol is 130-26-7.

What are the molecular formula and molecular weight of Clioquinol?

Clioquinol has molecular formula C9H5ClINO and molecular weight 305.500 g/mol.

Is Clioquinol hazardous?

Clioquinol has GHS signal word Danger and hazard statements H301 — Toxic if swallowed.

What are the upstream and downstream products of Clioquinol?

For Clioquinol, Upstream Products: 5-Chloro-8-hydroxyquinoline, 8-Hydroxyquinoline, Water; Downstream Products: Chloroxine, Iodoquinol, 5-Chloro-8-hydroxyquinoline.

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

Last updated:

How to cite: Jingsj. "Clioquinol (CAS 130-26-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-49240-9 (accessed 2026-11-07).

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