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ChemSpider 2D Image | Sulconazole | C18H15Cl3N2S

SULCONAZOLEсульконазол , سولكونازول , 硫康唑

  • Molecular FormulaC18H15Cl3N2S
  • Average mass397.749 Da

1H-Imidazole, 1-[2-[[(4-chlorophenyl)methyl]thio]-2-(2,4-dichlorophenyl)ethyl]- [ACD/Index Name] 
1-[2-[[(4-Chlorophenyl)methyl]thio]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole: SulconazoleCAS Registry Number: 61318-90-9 
CAS Name: 1-[2-[[(4-Chlorophenyl)methyl]thio]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole 
Additional Names: (±)-1-[2,4-dichloro-b-[(p-chlorobenzyl)thio]phenethyl]imidazole 
Molecular Formula: C18H15Cl3N2S 
Molecular Weight: 397.75 
Percent Composition: C 54.35%, H 3.80%, Cl 26.74%, N 7.04%, S 8.06% 
Literature References: Prepn: K. A. M. Walker, DE2541833idem,US4055652 (1976, 1977 both to Syntex). HPLC determn in plasma: M. Fass et al.,J. Pharm. Sci.70, 1338 (1981). Mechanism of action study: W. H. Beggs, Biochem. Arch.10, 117 (1994). Clinical trial in tinea pedis: W. A. Akers et al.,J. Am. Acad. Dermatol.21, 686 (1989). Review of pharmacology and clinical efficacy: P. Benfield, S. P. Clissold, Drugs35, 143-153 (1988). 
Derivative Type: Nitrate 
CAS Registry Number: 61318-91-0 
Manufacturers’ Codes: RS-44872 
Trademarks: Exelderm (Syntex); Myk (Cassenne); Sulcosyn (Syntex) 
Molecular Formula: C18H15Cl3N2S.HNO3 
Molecular Weight: 460.76 
Percent Composition: C 46.92%, H 3.50%, Cl 23.08%, N 9.12%, S 6.96%, O 10.42% 
Properties: Colorless crystals from acetone, mp 130.5-132°. 
Melting point: mp 130.5-132° 
Therap-Cat: Antifungal. 
Keywords: Antifungal (Synthetic); Imidazoles.

Sulconazole (trade name Exelderm) is an antifungal medication of the imidazole class. It is available as a cream or solution to treat skin infections such as athlete’s footringwormjock itch, and sun fungus.[1][2] Although not used commercially for insect control, sulconazole nitrate exhibits a strong anti-feeding effect on the keratin-digesting Australian carpet beetle larvae Anthrenocerus australis.[3]


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File:Sulconazole synthesis.svg

DE 2541833 US 4038409

(Read example 5 and 9 in US patent.)

EXAMPLE 5Alternative Route to 1-[β-(R-carbonylthio)phenethyl]imidazolesA. Preparation of 1-[2,4-dichloro-β-(methylcarbonylthio)-phenethyl]imidazole, oxalate.1-(β,2,4-Trichlorophenethylimidazole (1.19g) in 5 ml of dry tetrahydrofuran was added to preformed sodium thioacetate, generated in situ from 720 mg thioacetic acid and sodium hydride (480 mg 57% dispersion in mineral oil) in 20 ml. tetrahydrofuran and the mixture stirred and refluxed under nitrogen for 18 hours. The solvent was removed under reduced pressure, water (20 ml) added and the product extracted with ether. The extracts were washed with water, dried (MgSO4), evaporated and the residue chromatographed on silica gel eluting with 10-20% acetone in dichloromethane. The pure product in ether was treated dropwise with ethereal oxalic acid until precipitation was complete, and the thus obtained oxalate salt of 1-[2,4-dichloro-β-(methylcarbonylthio)phenethyl]imidazole recrystallized from acetone/ethyl acetate with mpBy substituting other available sodium thioacids for sodium thioacetate, other compounds of this invention may be prepared.

EXAMPLE 9A. Preparation of 1-[2,4-dichloro-β-(4-chlorobenzylthio)-phenethyl]imidazoleTo a stirred solution of 330 mg sodium hydroxide in 30 ml methanol under nitrogen is added 810 mg of 1-[2,4-dichloro-β-(methylcarbonylthio)phenethyl]imidazole oxalate and the mixture is stirred at room temperature for ca. 30 minutes (until thin layer chromatography shows the disappearance of the ester). α,p-dichlorotoluene (350 mg) is then added, the solution stirred a further 15 minutes and the solvent removed under reduced pressure. Ether and water are then added to the residue and the ether extract washed with water, dried (MgSO4) and concentrated. Dropwise addition of nitric acid (d = 1.42) until precipitation is complete gives the nitrate salt of 1-[2,4-dichloro-β-(4-chlorobenzylthio)phenethyl]imidazole, recrystallized from acetone, mp 130.5°-132° C.B. By using other compounds of this invention exemplified by those set forth in Examples 2 and 4 and other suitable (substituted) hydrocarbyl halides (or mesylates, tosylates), other compounds may be prepared.



Synthesis Path

Substances Referenced in Synthesis Path

CAS-RNFormulaChemical NameCAS Index Name
6258-66-8C7H7ClS4-chlorobenzyl mercaptanBenzenemethanethiol, 4-chloro-
24155-42-8C11H10Cl2N2O1-(2,4-dichlorophenyl)-2-(1H-imidazol-1-yl)ethanol1H-Imidazole-1-ethanol, α-(2,4-dichlorophenyl)-


  1. ^ sulconazole topical
  2. ^ Fromtling RA (April 1988). “Overview of medically important antifungal azole derivatives”Clinical Microbiology Reviews1 (2): 187–217. doi:10.1128/CMR.1.2.187PMC 358042PMID 3069196.
  3. ^ Sunderland MR, Cruickshank RH, Leighs SJ (2014). “The efficacy of antifungal azole and antiprotozoal compounds in protection of wool from keratin-digesting insect larvae”. Textile Research Journal84 (9): 924–931. doi:10.1177/0040517513515312.
Clinical data
Trade namesExelderm
Routes of
ATC codeD01AC09 (WHO)
showIUPAC name
CAS Number61318-90-9 
PubChem CID5318
CompTox Dashboard (EPA)DTXSID8044129 
Chemical and physical data
Molar mass397.74 g·mol−1
3D model (JSmol)Interactive image
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/////////SULCONAZOLE, сульконазол , سولكونازول , 硫康唑 ,  Antifungal, 





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DR ANTHONY MELVIN CRASTO, Born in Mumbai in 1964 and graduated from Mumbai University, Completed his Ph.D from ICT, 1991,Matunga, Mumbai, India, in Organic Chemistry, The thesis topic was Synthesis of Novel Pyrethroid Analogues, Currently he is working with AFRICURE PHARMA as ADVISOR, earlier assignment was with GLENMARK LIFE SCIENCES LTD, as CONSUlTANT, Retired from GLENMARK in Jan2022 Research Centre as Principal Scientist, Process Research (bulk actives) at Mahape, Navi Mumbai, India. Total Industry exp 32 plus yrs, Prior to joining Glenmark, he has worked with major multinationals like Hoechst Marion Roussel, now Sanofi, Searle India Ltd, now RPG lifesciences, etc. He has worked with notable scientists like Dr K Nagarajan, Dr Ralph Stapel, Prof S Seshadri, etc, He did custom synthesis for major multinationals in his career like BASF, Novartis, Sanofi, etc., He has worked in Discovery, Natural products, Bulk drugs, Generics, Intermediates, Fine chemicals, Neutraceuticals, GMP, Scaleups, etc, he is now helping millions, has 9 million plus hits on Google on all Organic chemistry websites. His friends call him Open superstar worlddrugtracker. His New Drug Approvals, Green Chemistry International, All about drugs, Eurekamoments, Organic spectroscopy international, etc in organic chemistry are some most read blogs He has hands on experience in initiation and developing novel routes for drug molecules and implementation them on commercial scale over a 32 PLUS year tenure till date Feb 2023, Around 35 plus products in his career. He has good knowledge of IPM, GMP, Regulatory aspects, he has several International patents published worldwide . He has good proficiency in Technology transfer, Spectroscopy, Stereochemistry, Synthesis, Polymorphism etc., He suffered a paralytic stroke/ Acute Transverse mylitis in Dec 2007 and is 90 %Paralysed, He is bound to a wheelchair, this seems to have injected feul in him to help chemists all around the world, he is more active than before and is pushing boundaries, He has 100 million plus hits on Google, 2.5 lakh plus connections on all networking sites, 100 Lakh plus views on dozen plus blogs, 227 countries, 7 continents, He makes himself available to all, contact him on +91 9323115463, email, Twitter, @amcrasto , He lives and will die for his family, 90% paralysis cannot kill his soul., Notably he has 38 lakh plus views on New Drug Approvals Blog in 227 countries...... , He appreciates the help he gets from one and all, Friends, Family, Glenmark, Readers, Wellwishers, Doctors, Drug authorities, His Contacts, Physiotherapist, etc He has total of 32 International and Indian awards

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