title: Stability-Indicating HPTLC Method for Simultaneous Estimation of Flurbiprofen and Chloramphenicol in Ophthalmic Solution.
abstract: A specific, accurate and reproducible stability-indicating high performance thin layer chromatography (HPTLC) method was developed for the estimation of flurbiprofen and chloramphenicol in the presence of their degradation products. Degradation studies of both the drugs were carried out in acidic, alkaline, neutral, oxidative, photolytic and thermal stress conditions. Separation was performed on thin layer chromatography plate precoated with silica gel 60 F254 using ethyl acetate : n-hexane : methanol : tri-ethyl amine (5 : 4 : 2 : 0.5, v/v/v/v). Spots at retention factor 0.29 and 0.62 were recognized as flurbiprofen and chloramphenicol, respectively, and were quantified through densitometric measurements at wavelength 267 nm. Method was found to be linear over the concentration range 12-60 ng/spot with correlation coefficient of 0.9997 for flurbiprofen and 200-1,000 ng/spot with correlation coefficient of 0.9977 for chloramphenicol. The proposed method was applied to the estimation of flurbiprofen and chloramphenicol in commercial ophthalmic formulation. The developed HPTLC method can be applied for routine analysis of flurbiprofen and chloramphenicol in the presence of their degradation products in their individual as well as combined pharmaceutical formulations.
authors.affiliation: Department of Quality Assurance, Maliba Pharmacy College, Uka Tarsadia University, Bardoli 394 350, District of Surat, Gujarat, India vaishnavisadakwala@gmail.com zealous_vani@yahoo.in.
authors.forename: Vaishnavi M
authors.initials: VM
authors.lastname: Sadakwala
authors.affiliation: Department of Quality Assurance, Maliba Pharmacy College, Uka Tarsadia University, Bardoli 394 350, District of Surat, Gujarat, India.
authors.forename: Renu S
authors.initials: RS
authors.lastname: Chauhan
authors.affiliation: Department of Quality Assurance, Maliba Pharmacy College, Uka Tarsadia University, Bardoli 394 350, District of Surat, Gujarat, India.
authors.forename: Shailesh A
authors.initials: SA
authors.lastname: Shah
authors.affiliation: Department of Quality Assurance, Maliba Pharmacy College, Uka Tarsadia University, Bardoli 394 350, District of Surat, Gujarat, India.
authors.forename: Dinesh R
authors.initials: DR
authors.lastname: Shah
mesh_terms: D002701:Chloramphenicol / Q000032:analysis*; D002855:Chromatography, Thin Layer / Q000379:methods*; D005480:Flurbiprofen / Q000032:analysis*; D057230:Limit of Detection; D009883:Ophthalmic Solutions / Q000737:chemistry*
chemical_list: D009883:Ophthalmic Solutions; D005480:Flurbiprofen; D002701:Chloramphenicol