Cefdinir

CAS# 91832-40-5

Cefdinir

Catalog No. BCC3747----Order now to get a substantial discount!

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Quality Control of Cefdinir

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Chemical structure

Cefdinir

3D structure

Chemical Properties of Cefdinir

Cas No. 91832-40-5 SDF Download SDF
PubChem ID 6915944 Appearance Powder
Formula C14H13N5O5S2 M.Wt 395.41
Type of Compound N/A Storage Desiccate at -20°C
Solubility DMSO : 33.33 mg/mL (84.29 mM; Need ultrasonic)
H2O : < 0.1 mg/mL (insoluble)
Chemical Name (6R,7R)-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-hydroxyiminoacetyl]amino]-3-ethenyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
SMILES Nc1scc(n1)C(=NO)C(=O)N[C@H]2[C@H]3SCC(=C(N3C2=O)C(O)=O)C=C
Standard InChIKey RTXOFQZKPXMALH-GHXIOONMSA-N
Standard InChI InChI=1S/C14H13N5O5S2/c1-2-5-3-25-12-8(11(21)19(12)9(5)13(22)23)17-10(20)7(18-24)6-4-26-14(15)16-6/h2,4,8,12,24H,1,3H2,(H2,15,16)(H,17,20)(H,22,23)/b18-7-/t8-,12-/m1/s1
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.

Cefdinir Dilution Calculator

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Cefdinir Molarity Calculator

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Preparing Stock Solutions of Cefdinir

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.529 mL 12.6451 mL 25.2902 mL 50.5804 mL 63.2255 mL
5 mM 0.5058 mL 2.529 mL 5.058 mL 10.1161 mL 12.6451 mL
10 mM 0.2529 mL 1.2645 mL 2.529 mL 5.058 mL 6.3226 mL
50 mM 0.0506 mL 0.2529 mL 0.5058 mL 1.0116 mL 1.2645 mL
100 mM 0.0253 mL 0.1265 mL 0.2529 mL 0.5058 mL 0.6323 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 Cefdinir

Cefdinir is a Cephalosporin antibiotic that is structurally similar to Cefixime.

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References on Cefdinir

Cefdinir Solid Dispersion Composed of Hydrophilic Polymers with Enhanced Solubility, Dissolution, and Bioavailability in Rats.[Pubmed:28208830]

Molecules. 2017 Feb 13;22(2). pii: molecules22020280.

The aim of this work was to develop Cefdinir solid dispersions (CSDs) prepared using hydrophilic polymers with enhanced dissolution/solubility and in vivo oral bioavailability. CSDs were prepared with hydrophilic polymers such as hydroxypropyl-methylcellulose (HPMC; CSD1), carboxymethylcellulose-Na (CMC-Na; CSD2), polyvinyl pyrrolidone K30 (PVP K30; CSD3) at the weight ratio of 1:1 (drug:polymer) using a spray-drying method. The prepared CSDs were characterized by aqueous solubility, differential scanning calorimetry (DSC), powder X-ray diffraction (p-XRD), scanning electron microscopy (SEM), aqueous viscosity, and dissolution test in various media. The oral bioavailability of CSDs was also evaluated in rats and compared with Cefdinir powder suspension. The Cefdinir in CSDs was amorphous form, as confirmed in the DSC and p-XRD measurements. The developed CSDs commonly resulted in about 9.0-fold higher solubility of Cefdinir and a significantly improved dissolution profile in water and at pH 1.2, compared with Cefdinir crystalline powder. Importantly, the in vivo oral absorption (represented as AUCinf) was markedly increased by 4.30-, 6.77- and 3.01-fold for CSD1, CSD2, and CSD3, respectively, compared with Cefdinir suspension in rats. The CSD2 prepared with CMC-Na would provide a promising vehicle to enhance dissolution and bioavailability of Cefdinir in vivo.

[Construction of the quantitative structure retention relationship of cefdinir related substances].[Pubmed:26757554]

Yao Xue Xue Bao. 2015 Sep;50(9):1161-6.

The molecular descriptors of impurities with known structure in Cefdinir were calculated, selected and associated with the chromatographic retention behavior to establish a model. This quantitative structure retention relationships (QSRR) model for the related substances of Cefdinir was established under specific chromatographic condition and verified by other impurities. 12 molecular descriptors were used to establish the QSRR model, F_AFRBWF, Blbn_J, SsCH3, SssCH2, SsNH2, SssNH, SssS, SHdCH2, EEM_AFc, EEM_AFpl, EEM_XFpl and Pi_MaxQ. The relativity between true values and predictions in QSRR of Cefdinir is R2 = 0.9836 (n = 18), DeltaRRT is no more than 0.154, as 10.17% in RRT. The results indicate that the QSRR model for the related substances of Cefdinir can be used to evaluate the analysis methods for related substances and predict the chromatographic behavior of new impurities, which will provide a new way for the evaluation of the effectiveness for drug quality control.

Combining the FtsZ-Targeting Prodrug TXA709 and the Cephalosporin Cefdinir Confers Synergy and Reduces the Frequency of Resistance in Methicillin-Resistant Staphylococcus aureus.[Pubmed:27161635]

Antimicrob Agents Chemother. 2016 Jun 20;60(7):4290-6.

Combination therapy of bacterial infections with synergistic drug partners offers distinct advantages over monotherapy. Among these advantages are (i) a reduction of the drug dose required for efficacy, (ii) a reduced potential for drug-induced toxicity, and (iii) a reduced potential for the emergence of resistance. Here, we describe the synergistic actions of the third-generation oral cephalosporin Cefdinir and TXA709, a new, FtsZ-targeting prodrug that we have developed with improved pharmacokinetics and enhanced in vivo efficacy against methicillin-resistant Staphylococcus aureus (MRSA) relative to earlier agents. We show that the active product of TXA709 (TXA707) acts synergistically with Cefdinir in vitro against clinical isolates of MRSA, vancomycin-intermediate S. aureus (VISA), vancomycin-resistant S. aureus (VRSA), and linezolid-resistant S. aureus (LRSA). In addition, relative to TXA707 alone, the combination of TXA707 and Cefdinir significantly reduces or eliminates the detectable emergence of resistance. We also demonstrate synergy in vivo with oral administration of the prodrug TXA709 and Cefdinir in mouse models of both systemic and tissue (thigh) infections with MRSA. This synergy reduces the dose of TXA709 required for efficacy 3-fold. Viewed as a whole, our results highlight the potential of TXA709 and Cefdinir as a promising combination for the treatment of drug-resistant staphylococcal infections.

Application and optimization of organic-inorganic hybrid monolithic capillary electrochromatography for in vivo cefdinir determination with microdialysis.[Pubmed:26549514]

J Sep Sci. 2016 Jan;39(2):440-9.

In this study, an organic-inorganic hybrid monolithic capillary column was applied and optimized for the determination of Cefdinir in plasma, and the electro-osmotic flow that usually hinders migration in reverse polarity became a driving force. The Sample used for pharmacokinetic research was collected by microdialysis using phosphate buffer (pH 7.4) as perfusate, and a volume of 60 muL fluid was mixed with 140 muL of acetonitrile. By using a silica-allyldimethyldodecylammonium monolithic column (100 mum inner diameter, 21 cm effective length and 31.2 cm total length), and a mobile phase consisting of phosphate and acetonitrile (pH 4.5, 50:50, v/v), at a voltage of 20 kV, the analytes were successfully separated with the background within 2.5 min. The detection wavelength was 214 nm. The calibration curve showed a good linearity (r(2) = 0.9994) over the concentration range of 0.2-50 mug/mL. The proposed method showed good specificity, linearity, sensitivity, precision and recovery, and the introduction of field amplified sample stacking helped to improve the low recovery caused by microdialysis. This method was successfully applied to quantify Cefdinir in rat plasma to support a pre-clinical pharmacokinetic trial.

Description

Cefdinir (FK-482) is a semi-synthetic, broad-spectrum antibiotic, which is proved to be effective for common bacterial infections of the ear, sinus, throat, and skin.

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