Synchronized Separation of Timolol from Some Prostaglandin Analogs (Bimatoprost, Latanoprost and Travoprost) for Determination in their Combined Pharmaceutical Formulations Using RP-HPLC

References

• O’Neil, Maryadele, J., (2006). The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals, 14th ed. New Jersey: Merck,. P 201,932,1623,1646.
   Google Scholar
• Mehta, J., Patel, V., Kshatri, N., Vyas, N.A. (2010). Versatile LC method for the simultaneous quantification of Latanoprost, Timolol and Benzalkonium chloride and related substances in the presence of their degradation products in ophthalmic solution. Analytical Methods. 11(2): 1737–44. doi: 10.1039/c0ay00405g
   Google Scholar
• Agarwal, A., Tiwari, S., Nagariya, K. (2013). Method development and its validation for quantitative simultaneous determination of Latanoprost, Timolol and Benzalkonium chloride in ophthalmic solution by RP-HPLC. Journal of Drug Delivery and Therapeutics. 3(2): 26–30. doi: 10.22270/jddt.v3i2.420
   Google Scholar
• Parfitt, K. and Martindale, W., Martindale. (2014). The Complete Drug Reference. 38th ed. London, UK: Pharmaceutical Press.
   Google Scholar
• Konstas, A.G.P., Mikropoulos, D., Stewart, W.C. (2009). Fixed combination therapy in glaucoma. In: Shaarawy T, Hitchings R, Sherwood M, Crowston J, eds. Glaucoma. Philadelphia: Elsevier. 565–75.
   Google Scholar
• Konstas, A.G., Boboridis, K., Tzetzi, D., Kallinderis, K., Jenkins, J.N., Stewart, W.C. (2005). 24-hour intraocular pressure short-term control with the latanoprost/timolol maleate fixed combination versus latanoprost, both dosed once each evening, in primary open-angle glaucoma patients. Arch. Ophthalmol. 123: 898–902. doi: 10.1001/archopht.123.7.898
   PubMed Web of Science ®Google Scholar
• Konstas, A.G., Mikropoulos, D., Haidich, A.B., Ntampos, K.S., Stewart, W.C. (2009). Twenty-four-hour intraocular pressure control with the travoprost / timolol maleate fixed combination compared with travoprost when both are dosed in the evening in primary open-angle glaucoma. British Journal of Ophthalmology. 93(4): 481–5. doi: 10.1136/bjo.2008.147322
   PubMed Web of Science ®Google Scholar
• Konstas, A.G., Holló, G., Mikropoulos, D., Tsironi, S., Haidich, A.B., Embeslidis, (2010). Twenty-four-hour intraocular pressure control with bimatoprost and the bimatoprost/timolol fixed combination administered in the morning, or evening in exfoliative glaucoma. British Journal of Ophthalmology. 94(2): 209–13. doi: 10.1136/bjo.2008.155317
   PubMed Web of Science ®Google Scholar
• United States Pharmacopeia and National Formulary (USP 38-NF 33). Rockville, MD: United States Pharmacopeia Convention; 2015. vol.I, II, III.p.4042, 5583, 5646.
   Google Scholar
• British Pharmacopoeia Commission. British Pharmacopoeia: London :TSO;2015. vol. II.p.1039
   Google Scholar
• Council of Europe. European Pharmacopoeia. 8th ed., Strasbourg: Council of Europe; 2014. vol. II, p.3427.
   Google Scholar
• Ashfaq, M., Khan, I.U., Asghar, M.N. (2006). High Performance Liquid Chromatography Determination of Latanoprost in Pharmaceutical Formulations using UV Detection. Analytical Letters. 39 (11): 2235–42. doi: 10.1080/00032710600755330
   Google Scholar
• Kumar, S.S., Natraj, K., Khan, A., Kumar, B.K., Venkateswara, R.J. (2011). Development and validation of RP-HPLC method for estimation of bimatoprost in pharmaceutical dosage forms. Journal of Pharmacy Research. 4(10): 3733
   Google Scholar
• Rele, R.V., Mhatre, V.V., Parab, J.M., Warkar, C.B. (2011). Simultaneous RP HPLC determination of Latanoprost and Timolol Maleate in combined pharmaceutical dosage form. Journal of Chemical and Pharmaceutical Research. 3: 138–44.
   Google Scholar
• Nejadi, M.K., Ansari, M., Mehdipour, M., Ahmadi, R. (2012). Simultaneous determination of timolol maleate and latanoprost tartrate in ophthalmic preparations by derivative spectrophotometry. Research in Pharmaceutical Sciences. 7(5). S667.
   Google Scholar
• Chengalva, P., Parameswari, S.A. and Reddy, P.J. (2016). Simultaneous Quantification of Travoprost and Timolol Maleate in Pharmaceutical Formulation by RP-HPLC. Int. J. Pharm. Sci. Res. 7(4): 1724–28
   Web of Science ®Google Scholar
• International Conference on Harmonisation, Validation of Analytical Procedures: Text and Methodology Q2(R1); Nov. 2005. Retrieved from http://www.ich.org/fileadmin/Public_Web_Site/ICH_Products/Guidelines/Quality/Q2_R1/Step4/Q2_R1_Guideline.pdf
   Google Scholar