Terbinafine

Allylamine antifungal agent CAS# 91161-71-6

Terbinafine

Catalog No. BCC3865----Order now to get a substantial discount!

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Quality Control of Terbinafine

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Chemical structure

Terbinafine

3D structure

Chemical Properties of Terbinafine

Cas No. 91161-71-6 SDF Download SDF
PubChem ID 1549008 Appearance Powder
Formula C21H25N M.Wt 291.43
Type of Compound N/A Storage Desiccate at -20°C
Solubility DMSO : ≥ 100 mg/mL (343.14 mM)
H2O : < 0.1 mg/mL (insoluble)
*"≥" means soluble, but saturation unknown.
Chemical Name (E)-N,6,6-trimethyl-N-(naphthalen-1-ylmethyl)hept-2-en-4-yn-1-amine
SMILES CC(C)(C)C#CC=CCN(C)CC1=CC=CC2=CC=CC=C21
Standard InChIKey DOMXUEMWDBAQBQ-WEVVVXLNSA-N
Standard InChI InChI=1S/C21H25N/c1-21(2,3)15-8-5-9-16-22(4)17-19-13-10-12-18-11-6-7-14-20(18)19/h5-7,9-14H,16-17H2,1-4H3/b9-5+
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of Terbinafine

DescriptionTerbinafine is an antifungal medication used to treat fungal infections. It is a potent non-competitive inhibitor of squalene epoxidase from Candida with a Ki of 30 nM.In Vitro:Terbinafine has a primary fungicidal action in vitro against most fungal pathogens, including dermatophytes, and dimorphic and filamentous fungi. Terbinafine specifically inhibits fungal ergosterol biosynthesis at the point of squalene epoxidation. The treated fungal cells rapidly accumulate tlic intermediate squalene and become deficient in the end-product of the pathway, ergosterol[1].In Vivo:Terbinafine is not only active after topical application but is very effective in experimental dermatophytoses following oral administration. In fungi infected guinea-pigs, the skin temperature dropps dramatically after the fourth treatment of terbinafine[2].

References:
[1]. Ryder NS, et al. Terbinafine: mode of action and properties of the squalene epoxidase inhibition. Br J Dermatol. 1992 Feb;126 Suppl 39:2-7. [2]. Mieth H, et al. Preclinical evaluation of terbinafine in vivo. Clin Exp Dermatol. 1989 Mar;14(2):104-7.

Protocol

Animal Administration [2]
Guinea-pigs: The backs (lumbar regions) of guinea-pigs, which have been mechanically depilated, are infected with 0.1 mL Sabouraud's dextrose 2% broth containing 106 c.f.u. of Truhophyton mentagrophytes. The treatments commence 48 h post-inoculation. The test compounds (Terbinafine) are suspended in 2% tylose and Tween 80 and administered via a stomach tube once daily on 9 consecutive days, or dissolved in a mixture of polyethylene glycol 400 and etbanol and spread on the infected part ot the body in a volume of 0.4 mL with a Hrigalski spatula once daily for 1-7 consecutive days[2].

References:
[1]. Ryder NS, et al. Terbinafine: mode of action and properties of the squalene epoxidase inhibition. Br J Dermatol. 1992 Feb;126 Suppl 39:2-7. [2]. Mieth H, et al. Preclinical evaluation of terbinafine in vivo. Clin Exp Dermatol. 1989 Mar;14(2):104-7.

Terbinafine Dilution Calculator

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Terbinafine Molarity Calculator

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Preparing Stock Solutions of Terbinafine

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 3.4314 mL 17.1568 mL 34.3136 mL 68.6271 mL 85.7839 mL
5 mM 0.6863 mL 3.4314 mL 6.8627 mL 13.7254 mL 17.1568 mL
10 mM 0.3431 mL 1.7157 mL 3.4314 mL 6.8627 mL 8.5784 mL
50 mM 0.0686 mL 0.3431 mL 0.6863 mL 1.3725 mL 1.7157 mL
100 mM 0.0343 mL 0.1716 mL 0.3431 mL 0.6863 mL 0.8578 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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Background on Terbinafine

Terbinafine is an allylamine antifungal agent which has fungicidal activity against a wide variety of dermatophytes, moulds and certain dimorphic fungi, and fungistatic activity against Candida albicans.

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References on Terbinafine

New Polyurethane Nail Lacquers for the Delivery of Terbinafine: Formulation and Antifungal Activity Evaluation.[Pubmed:28263845]

J Pharm Sci. 2017 Jun;106(6):1570-1577.

Onychomycosis is a fungal nail infection. The development of new topical antifungal agents for the treatment of onychomycosis has focused on formulation enhancements that optimize the pharmacological characteristics required for its effective treatment. Polyurethanes (PUs) have never been used in therapeutic nail lacquers. The aim of this work has been the development of new PU-based nail lacquers with antifungal activity containing 1.0% (wt/wt) of Terbinafine hydrochloride. The biocompatibility, wettability, and the prediction of the free volume in the polymeric matrix were assessed using a human keratinocytes cell line, contact angle, and Positron Annihilation Lifetime Spectroscopy determinations, respectively. The morphology of the films obtained was confirmed by scanning electron microscopy, while the nail lacquers' bioadhesion to nails was determined by mechanical tests. Viscosity, in vitro release profiles, and antifungal activity were also assessed. This study demonstrated that PU-Terbinafine-based nail lacquers have good keratinocyte compatibility, good wettability properties, and adequate free volume. They formed a homogenous film after application, with suitable adhesion to the nail plate. Furthermore, the antifungal test results demonstrated that the Terbinafine released from the nail lacquer Formulation A PU 19 showed activity against dermatophytes, namely Trichophyton rubrum.

Pathogenic Dermatophytes Survive in Nail Lesions During Oral Terbinafine Treatment for Tinea Unguium.[Pubmed:28281037]

Mycopathologia. 2017 Aug;182(7-8):673-679.

Tinea unguium caused by dermatophyte species are usually treated with oral antimycotic, Terbinafine (TBF). To understand the mechanisms of improvement and recalcitrance of tinea unguium by oral TBF treatment, a method of quantifying dermatophyte viability in the nail was developed, and the viability of dermatophytes was analyzed in toenail lesions of 14 patients with KOH-positive tinea unguium treated with oral TBF 125 mg/day for up to 16 weeks. Mycological tests, including KOH examination and fungal culture, and targeted quantitative real-time PCR for internal transcribed spacer (ITS) region, including rRNA, were demonstrated at the initial visit and after 8 and 16 weeks of treatment. Assays in eight patients showed that average ITS DNA amount significantly decreased, to 44% at 8 weeks and 36% at 16 weeks compared with 100% at initial visit. No significant difference was observed between at 8 and 16 weeks, despite the TBF concentration in the nail supposedly more than 10-fold higher than the minimum fungicidal concentration for dermatophytes. This finding suggests the pathogenic dermatophytes in nail lesions could survive in a dormant form, such as arthroconidia, during oral TBF treatment. Both antimycotic activity and nail growth are important factors in treatment of tinea unguium.

New microbial source of the antifungal allylamine "Terbinafine".[Pubmed:28344499]

Saudi Pharm J. 2017 Mar;25(3):440-442.

The isolated active compound "F12" from the culture media of the Streptomyces sp. KH-F12 was identified using different spectroscopic techniques. Both 1D- and 2D-NMR as well as HRESIMS were utilized to characterize the structure of the isolated compound. 'F12" was found to be the known systemic antifungal drug Terbinafine marketed under the name "Lamisil". Full analysis of the COSY, HSQC and HMBC enables the full assignment of proton and carbon atoms. Terbinafine is a synthetic allylamine and is reported here for the first time from natural source.

Impact of a terbinafine-florfenicol-betamethasone acetate otic gel on the quality of life of dogs with acute otitis externa and their owners.[Pubmed:28295766]

Vet Dermatol. 2017 Aug;28(4):386-e90.

BACKGROUND: Treatment of canine otitis externa with owner-administered products can be difficult. OBJECTIVES: To evaluate otic treatment administered by a veterinarian on quality of life (QoL) of dogs with otitis externa and their owners, and on clinical and cytology parameters of otitis; compared to an owner-administered treatment. ANIMALS: Fifty client-owned dogs randomly randomized into two groups and treated for 2 weeks. METHODS: Veterinarians treated Group A dogs with a veterinary licensed otic gel on two occasions at a 1 week interval; owners treated Group B dogs once daily with a veterinary licensed otic drop based product along with twice weekly cleaning. Veterinarians evaluated otitis with the OTI-3 scale and semi-quantitative cytological examination on days 0, 7, 14 and 28. At each visit, owners assessed QoL with a validated questionnaire and pruritus with a Visual Analog Scale. Scores before and after treatment of each group, and differences between groups were analysed statistically. RESULTS: In both groups, all parameters improved significantly. There was a significantly higher improvement of QoL scores, for dogs and owners, in Group A, compared to Group B at all time points (P < 0.05), except for owner QoL on Day 28. There was no difference in improvement of OTI-3 between groups at any time point, whereas Group A cytology scores and pruritus improved significantly more by Day 7 (P = 0.0026 and P = 0.0294, respectively). CONCLUSION: A veterinarian-administered otic gel provided equivalent efficacy and higher QoL to dogs with otitis externa and their owners, compared to an owner-administered topical otic therapy.

Description

Terbinafine (TDT 067) is an antifungal medication used to treat fungal infections. It is a potent non-competitive inhibitor of squalene epoxidase from Candida with a Ki of 30 nM. Terbinafine also antibacterial activity against certain Gram-positive and Gram-negative bacteria.

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