Ornidazole - CAS 16773-42-5
Catalog number:
16773-42-5
Category:
Inhibitor
Not Intended for Therapeutic Use. For research use only.
Molecular Formula:
C7H10ClN3O3
Molecular Weight:
219.63
COA:
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Targets:
Antibacterial
Description:
Ornidazole is a 5-nitroimidazole derivative with antiprotozoal and antibacterial properties against anaerobic bacteria.
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Purity:
>98%
Synonyms:
Ro7-0207, NSC 95075
MSDS:
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1. Inner reorganization limiting electron transfer controlled hydrogen bonding: intra- vs. intermolecular effects
Eduardo Martınez-Gonzalez and Carlos Frontana*. Phys. Chem. Chem. Phys., 2014, 16, 8044—8050
The observed experimental behaviour of the studied compounds reveals that, for ornidazole and metronidazole, the rate of electron transfer becomes the determinant of overall sequential association via electron transfer controlled hydrogen bonding step, as ET is significantly slower in ratecomparedtothatofthebinding process. The effect determining the value of kO/R s is likely due to a competing intramolecular bond formation, which affords amorestableinitialstructureofthecompoundtobereduced. In terms of electrochemical reactions, the voltammograms become irreversible and the shifts in peak potentials can be employed to evaluate both the ET rate, along with the binding constant KB of the studied systems. This methodology will be used in further studies considering association with other types of molecules in which conformational changes could occur associated with ET.
2. Dextrin cross linked with poly(HEMA): a novel hydrogel for colon specific delivery of ornidazole
Dipankar Das, Raghunath Das, Paulomi Ghosh, Santanu Dhara, Asit Baran Pandac and Sagar Pal*. RSC Adv., 2013, 3, 25340–25350
Further, several antibiotics, such as ciprooxacin, metronidazole, ornidazole, tetracycline hydrochloride have been used for treatment of colon related disorders. Out of these ornidazole is the preferred drug,mostly used in the treatment of severe hepatic and intestinal amoebiasis, as it has antiprotozoal and antibacterial properties against anaerobic bacteria. It is used in the treatment and prophylaxis of susceptible anaerobic infections in gastric surgery. However, due to the complete and prompt absorption after oral administration and short biological half life of ornidazole, it is essential to deliver the drug in a more sustained way to provide longer bioavailability and hence its administration in tablet form may provide aminimumamount of ornidazole for local action in the colon. In spite of the development of various drug delivery systems, like carboxymethyl chitosan hydrogel, hydrogel based on sterculia gum–polyHEMA–polyacrylic acid, hydrogel derived from sterculia gum and poly(vinyl pyrrolidone), HPMC, and ethyl cellulose, to investigate the colon specific release behaviour of ornidazole, it is essential to develop new colon specific delivery systems for ornidazole to overcome important shortcomings of developed hydrogels, like specificity, biodegradability, biocompatibility, drug stability, and most importantly controlled release properties.
3. A study on the formation of the nitro radical anion by ornidazole and its significant decrease in a structurally characterized binuclear Cu(II)-complex: impact in biology
Ramesh Chandra Santra, Durba Ganguly, Jyotsna Singh, Kasturi Mukhopadhyay and Saurabh Das*. Dalton Trans.,2015, 44,1992–2000
A Cu(II) complex of ornidazole was prepared and characterized. Using Onz and the complex, we showed that the complex was able to drastically decrease the formation of the nitro-radical anion in an enzyme assay where hypoxanthine reduces the nitro group in the presence of xanthine oxidase. DNA binding experiments with Onz and the complex revealed no improvement in binding in favor of the complex. However, the efficacy of the complex remained unaltered towards bacterial cells Staphylococcus aureus and Escherichia coli. Formation of the nitro radical anion is responsible for antiparasitic/antibacterial activity as well as toxic side effects to the central nervous system, and it appears from this study that even with decreased nitro radical anions, the complexes are quite active. This study therefore suggests that complex formation strikes the correct balance for the generation of nitro radical anion that is able to maintain efficacy on bacterial cells, leaving no excess for toxic side effects.
4. Modified biopolymer-dextrin based crosslinked hydrogels: application in controlled drug delivery
Dipankar Das and Sagar Pal*. RSC Adv.,2015, 5,25014–25050
Also, the presence of poly(HEMA) as well MBA in the hydrogel structure enhanced the hydrophilicity of the network, which offers more functional groups as well as a higher surface area. This provides the release of the enclosed drug in a more sustained way. It was also pointed out that the interaction between the hydrogel and ornidazole is mainly a physical interaction, as shown in Fig. 21a. The in vitro release of ornidazole from the hydrogel followed a first order kinetic and non-Fickian diffusion mechanism. The drug stability study confirmed that ~98% of the ornidazole remains stable in the hydrogel for up to 3 months. The dextrin and poly(HEMA) based hydrogel also showed excellent release characteristics for the antibiotic ciprofloxacin (33.75% release after 18 h) (Fig. 24b). It was also observed through various characterizations that physical interactions mainly predominate between ciprofloxacin and the hydrogel in the tablet formulation (Fig. 21b). In addition, c-Dxt/pHEMA demonstrated excellent potential as ciprofloxacin carrier for up to 3 months, as ~98.5% of the drug was stable.
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CAS 16773-42-5 Ornidazole

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