Ciclopirox

Also known as: 6-Cyclohexyl-1-hydroxy-4-methyl-2(1H)-pyridinone, Cyclopirox, Batrafen, Loprox, Penlac, Stieprox, Terit, Mycoster, 1-Hydroxy-4-methyl-6-cyclohexyl-2-pyridone

Ciclopirox (CAS 29342-05-0) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C12H17NO2 and a molecular weight of 207.269 g/mol. Key properties include a melting point of 1440C, a boiling point of 350.0±25.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 165.5±23.2 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 29342-05-0
Jingsj CID: J-1993875-1
Molecular Formula: C₁₂H₁₇NO₂
Molecular Weight: 207.269 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	1440C
Boiling Point	350.0±25.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	165.5±23.2 °C
Exact Mass	207.125931
PSA	42.23000
LogP	2.59
Vapor Pressure	0.0±1.7 mmHg at 25°C
Refractive Index	1.582
Storage Conditions	-20°C Freezer

GHS Safety & Compliance

IrritantSignal word: Warning

H302 — Harmful if swallowed

Activity & Biological Data

Additional Information	[1]. Niewerth, M., et al., Ciclopirox olamine treatment affects the expression pattern of Candida albicans genes encoding virulence factors, iron metabolism proteins, and drug resistance factors. Antimicrob Agents Chemother, 2003. 47(6): p. 1805-17. [2]. Leem, S.H., et al., The possible mechanism of action of ciclopirox olamine in the yeast Saccharomyces cerevisiae. Mol Cells, 2003. 15(1): p. 55-61. [3]. Ratnavel, R.C., R.A. Squire, and G.C. Boorman, Clinical efficacies of shampoos containing ciclopirox olamine (1.5%) and ketoconazole (2.0%) in the treatment of seborrhoeic dermatitis. J Dermatolog Treat, 2007. 18(2): p. 88-96.

Additional Information

[1]. Niewerth, M., et al., Ciclopirox olamine treatment affects the expression pattern of Candida albicans genes encoding virulence factors, iron metabolism proteins, and drug resistance factors. Antimicrob Agents Chemother, 2003. 47(6): p. 1805-17. [2]. Leem, S.H., et al., The possible mechanism of action of ciclopirox olamine in the yeast Saccharomyces cerevisiae. Mol Cells, 2003. 15(1): p. 55-61. [3]. Ratnavel, R.C., R.A. Squire, and G.C. Boorman, Clinical efficacies of shampoos containing ciclopirox olamine (1.5%) and ketoconazole (2.0%) in the treatment of seborrhoeic dermatitis. J Dermatolog Treat, 2007. 18(2): p. 88-96.

Customs & Trade Information

HS Code	2933399090
Summary	2933399090. other compounds containing an unfused pyridine 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 Ciclopirox?

The CAS number of Ciclopirox is 29342-05-0.

What are the molecular formula and molecular weight of Ciclopirox?

Ciclopirox has molecular formula C12H17NO2 and molecular weight 207.269 g/mol.

Is Ciclopirox hazardous?

Ciclopirox has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.

What are the upstream and downstream products of Ciclopirox?

For Ciclopirox, Upstream Products: 2-Aminopyridine, 6-Cyclohexyl-4-methyl-2H-pyran-2-one, Imidazole.

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. "Ciclopirox (CAS 29342-05-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1993875-1 (accessed 2026-11-09).

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