Abstract
In this literature review, we will introduce most of up-to-date reported methods that have been developed for determination of lamivudine in its pure form, combined form with other drugs, combined form with degradation products, and in biological samples.
Author Contributions
Academic Editor: Fatma Mohammed Mady, Department of Pharmaceutics, Minia University, Egypt.
Checked for plagiarism: Yes
Review by: Single-blind
Copyright © 2021 Roshdy E. Saraya, et al.
Competing interests
No author has any associations that may represent a potential conflict of interest.
Citation:
Introduction
Lamivudine
(LAM) is an analogue of cytidine. It can inhibit both types HIV-1 and HIV-2 reverse transcriptase and also the reverse transcriptase of hepatitis B virus. It is phosphorylated to active metabolites that compete for incorporation into viral DNA. They inhibit the HIV reverse transcriptase enzyme competitively and act as a chain terminator of DNA synthesis 1. The lack of a 3'-OH group in the incorporated nucleoside analogue prevents the formation of the 5' to 3' phosphodiester linkage essential for DNA chain elongation, and therefore, the viral DNA growth is terminated 2.
As such, in this literature review, we will introduce most of up-to-date reported methods that have been developed for determination of LAM in its pure form, combined form with other drugs, combined form with degradation products, and in biological samples.
Review of Analytical Methods
Various techniques were used for the analysis of RIT in pure forms, in their pharmaceutical formulations and in biological fluids. The available reported methods in the literature can be summarized as follows: Table 1.
Table 1. Spectrophotometric MethodsDrugs | Method or reagent | λmax | Ref |
LAMand zidovudine | First drivative spectrphotometry | 239.5 and 245.3 nm for LAM and 225.1 and 251.5 nm for zidovudine | 3 |
LAM and stavudine | First drivative spectrphotometry | 280 for stavudine and 300 nm for LAM. | 4 |
LAM and stavudine | 3-methyl-2-benzothiozolinone hydrazone hydrocloride and ferric chloride | 660 nm for LAM and 630 nm for stavudine | 5 |
LAM | chloramine-T and methyl orange, or chloramine-T and indigo carmine | 520nm or 610nm | 6 |
LAMand zidovudine | derivative spectrophotometry | 246 nm for LAM and 263 nm for zidovudine | 7 |
LAM | N HCl0.1 N NaOH | 279.6 nm269.8 nm | 8 |
Tenofovir, Disoproxil and LAM | Simultaneous equation methodMulticomponent analysisDerivative spectroscopy method | 247, 259 and 272 nm | 9 |
LAMand zidovudine | Derivative Spectrophotometry | 242, and 236 nm | 10 |
LAM | methyl orange and indigocarmine | 520n and 610 nm | 11 |
LAMand zidovudine | UV spectroscopy and multivariate calibration | 250 and 267 nm | 12 |
LAM and efavirenz | overlain spectra method | 271 and 247 nm | 13 |
LAM | chloranilic acid and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone | 221 and 230 nm | 14 |
LAM, nevirapine and zidovudine | overlain spectra method | 280.2nm, 312nm and 266.8nm | 15 |
LAM, Sofosbuvir,and Ritonavir | Silver nanoparticles synthesis | 421 nm for Sofosbuvir and Ritonavir and at 425 nm for Lamivudine LAM | 16 |
2. Chromatographic Methods
Matrix | Column | Mobile phase | system | Ref |
---|---|---|---|---|
plasma | Aquasil C18 column | ACN : water (15:85 v/v) | HPLC–MS/MS | 17 |
Tablet | Spherisorb® C18 analytical column | methanol: water: ACN (70:20:10 (v/v/v)) | HPLC-UV 265 nm | 3 |
plasma | a Shim-pack® C8 column | Sodium dihydrogen phosphate monohydrate (10 mM): methanol:ACN (94:3:3, v/v/v, pH 4.8) | HPLC-UV 270 nm | 18 |
plasma | Phenomenex C8 column | A gradient elution with 20 mM ammonium acetate buffer with pH 4.5 : ACN | HPLC–MS/MS | 19 |
Tablet | Symmetry C18 column | methanol: water (20:80 v/v) | HPLC-UV 270 nm | 4 |
Tablet | C18 column | A gradient elution with 80% of 10 mM acetate buffer (pH 3.5): 20% methanol: 50% CAN: 50% isopropyl alcohol. | HPLC-UV 270 nm | 20 |
Plasma and saliva | Zorbax SB-C18 column | 0.005 M di potassium hydrogen phosphate solution in water (pH 6.8): methanol (92:8 v/v). | HPLC-UV 270 nm | 21 |
Tablet | HiQ SilC18 column | 0.01 M potassiumdi hydrogen orthophosphate (pH 3.0): methanol (55:45 v/v) | HPLC-UV 272 nm | 22 |
plasma | C18 column | a mixture of phosphate buffer (0.05 M) containing TEA (1 mL/L pH 3.5): methanol (91:9, v/v) | HPLC-UV 276 nm | 23 |
plasma | Lichrospher® RP‐ C18 column | 20 mM ammonium acetate: methanol containing 1% of acetic acid (60:40 v/v) | HPLC–MS/MS | 24 |
plasma | a phenyl column with Phenomenex C18 guard column | 5% methanol in 20 mM dibasic phosphate buffer (pH 6). | HPLC-UV 256 nm | 25 |
plasma | octylsilane column | 20 mM sodium phosphate buffer with (8 mM 1 octane sulfonic acid sodium salt): ACN (86:14, v/v) | HPLC-UV 265 nm | 26 |
plasma | C18 analytical column | CAN: water (9:91, v/v) | HPLC-UV 271 nm | 27 |
plasma | Aquasil C18 column | ACN: water (15:85, v/v) | HPLC–MS/MS | 28 |
plasma | A Symmetry Shield RP C18 column | A gradient elution with acetate buffer (20 mM potassium acetate pH 4.60): ACN | HPLC-UV 260 nm | 29 |
plasma | a Shiseido C8 column | a gradient elution with methanol: water (80:20, v/v) and water, both containing 10 mM ammonium acetate | HPLC –MS/MS | 30 |
Plasma | a Spherisorb® C18 analytical column | methanol: water (75 : 25, v/v) | HPLC-UV at 265 nm | 31 |
Plasma | a C18 column | CAN: water (13:87, v/v) | HPLC-UV at 220 nm | 32 |
Tablet | Thermo Hypersil Gold C18 column | Agradiant elution with 20 mM sodium phosphate buffer (pH 3.5) with phosphoric acid : methanol | HPLC-UV at 265 nm | 33 |
Plasma | a C18 column | 0.01M sodium dihydrogen phosphate : methanol: ACN (4 : 2 : 3 v/v/v) | HPLC-UV at 285 nm | 7 |
Plasma | Phenyl column C18 column | ACN: 0.085% phosphoric acid (12:88, v/v) | HPLC-UV at 270 nm | 34 |
Plasma | Aquasil® C18 | A gradient elution with 0.05% FA in either water or methanol | HPLC – MS/MS | 35 |
Plasma | Zorbax® C18 column | methanol: water: phosphate buffer (pH 5.65) (80:10:10; v/v/v) | HPLC-UV at 275 nm | 36 |
Plasma | A Phenomenex C18 | Methanol: Water (85:15%v/v) | HPLC-UV at 270 nm | 37 |
Plasma and tissues | a phenyl column | 8% ACN in 5 mm 1‐heptane sulfonic acid dissolved in 30 mm AF buffer (pH 3.3). | HPLC-UV at 254 nm | 38 |
Plasma | a Vydac C18 column | A gradient elution, both CAN and ultrapure water solvents contained 0.2% FA. | HPLC – MS/MS | 39 |
Rabbit plasma | Hypersil BDS C-18 column | 0.25% Triethylamine buffer (pH 3.0): CAN (70:30, v/v) | HPLC-UV at 256 nm | 40 |
Plasma | Zorbax SB C8 column | A gradient elution with methanol: acetic acid sodium acetate buffer (pH 3.9) | HPLC-UV at 260 nm | 41 |
Plasma | Prontosil C18 column | 1 mM ammonium acetate in water (pH 6.5 ± 0.3): ACN (50:50 v/v) | HPLC – MS/MS | 42 |
Plasma | A Chromolith C18 column | 50 mM sodium dihydrogen phosphate : TEA (996:4 v/v) | HPLC-UV at 278 nm | 43 |
Plasma | An ACE 5 CN column | 0.5% FA in water: ACN (55:45, v/v) | HPLC – MS/MS | 44 |
Rat tissue | a C18 column | methanol: 7.5 mM ammonium acetate (30:70, v/v) | HPLC – MS/MS | 45 |
Plasma | Pack VP - ODS C18 column | phosphate buffer (pH7.0): ACN : methanol (91:0.1:9) | HPLC-UV at 274 nm | 46 |
Plasma | a C18 column | A gradient with 0.1% FA in water and 0.1% FA in methanol | HPLC – MS/MS | 47 |
Tablet | a C18 column | water: methanol (60:40 v/v) | HPLC-UV 270 nm | 48 |
Plasma | A Phenomonex C18 column | A queous solution of 15% ACN and 0.1% acetic acid | HPLC – MS/MS | 49 |
Tablet | A bondapak C18 | 0.02 M tri-sodium citrate and methanol (70:30 v/v) | HPLC-UV at 266 nm | 50 |
Tablet | A thermo BDS C18 column | A formic acid and methanol in the ratio of 50:50 | HPLC-UV at 264 nm | 51 |
Plasma | a C8 column | A gradient elution with 10 mM potassium phosphate, 3% ACN, and methanol | HPLC-UV at 272 nm | 52 |
Tablet | a Hypersil BDS, C18 column | o- phosphoric acid: methanol (70:30) | HPLC-UV at 220 nm | 53 |
Plasma | A Peerless Basic C18 column | 0.1% formic acid in water: methanol (15:85, v/v) | HPLC – MS/MS | 54 |
Tablet | a C18 column | methanol and water (89:11 v/v) | HPLC-UV at 272 nm | 55 |
Tablet | a Diamonsil Cl8 column | 0.025 mol ammonium acetate (pH 3.9 ± 0.1)-methanol (90:10). | HPLC-UV at 270 nm | 56 |
Plasma | a C18 column | A gradient elution with 10 mM acetate buffer (pH 6.5)- ACN | HPLC-UV at 265 nm | 57 |
Plasma | a Hypurity Advance C18 | ACN :0.1% FA (76:24, v/v) | HPLC – MS/MS | 58 |
Tablet | A LunaC18 | A gradient elution with 50mM ammonium acetate buffer (pH = 6.8) and methanol | HPLC-UV at 265 nm | 59 |
plasma | a Hypersil BDS, C18 column | 0.1 M ammonium acetate buffer in 0.5% acetic acid, v/v and methanol (40:60, v/v) | HPLC-UV at 270 nm | 60 |
Tablet | An YMC pack C8 column | buffer pH 3.5: methanol (90:10 v/v) | HPLC-UV at 265 nm | 61 |
Tablet | a Kromasil C18 analytical column | methanol: 10 mM phosphate buffer (pH 5.0) (70:30 v\v). | HPLC-UV at 254 nm | 62 |
Tablet | A Luna C18 | 0.1 % triethylamine (pH 5.11: ACN (70:30) | HPLC-UV at 245 nm | 63 |
Tablet | a Luna hydrophilic interaction column | ACN /10 mM ammonium formate (95:5, v/v) | HPLC – MS/MS | 64 |
Tablet | a C18 column | Agradient elution with 0.05 M Phosphate buffer (pH 6.2): ACN | HPLC-UV 260 nm | 65 |
Tablet | A Phenomenex Luna C18 column | ACN : methanol: water 30: 45: 25 (v/v/v) | HPLC-UV 258 nm | 66 |
Matrix | Stationary phase | Mobile phase | detector | Ref |
---|---|---|---|---|
Tablet | silica-gel 60 F254 plate | toluene/chloroform/methanol (1:6:3 v/v/v) | UV- 276 and 271 nm | 67 |
Tablet | silica-gel 60 F254 plate | Acetone: chloroform:methanol (4: 4: 2 v/v/v) | UV- 265nm | 68 |
Tablet | silica-gel 60 F254 plate | chloroform: methanol: toluene (8: 2: 2, v/v/v) | UV- 265nm | 69 |
Tablet | silica-gel 60 F254 plate | ethyl acetate, methanol, toluene and conc ammonia (38.7:19.4:38.7:3.2, v:v:v:v) | UV- 254nm | 70 |
Tablet | silica-gel 60 F254 plate | n-hexane: chloroform: methanol (1:7:2 v/v/v) | UV- 275 nm | 71 |
Conclusion
This literature review represents an up to date survey about all reported methods that have been developed for determination of the anticancer drug, lamivudine in its pure form, combined form with other drugs, combined form with degradation products, and in biological samples such as liquid chromatography, spectrophotometry, electrochemistry, etc...
References
- 1.Betts John.Sue Ho. (2016).Martindale’: fromabrustozotarolimus—130 years of pharmacy knowledge.Dementia. 14(53), 583.
- 2.Ching Lung Lai.Man Fung Yuen. (2000).Profound suppression of hepatitis B virus replication with lamivudine.Journal of medical virology. 61(3), 367-373.
- 3.Uslu B.S.A.Özkan. (2002).Determination of lamivudine and zidovudine in binary mixtures using first derivative spectrophotometric, first derivative of the ratio-spectra and high-performance liquid chromatography–UV methods.Analytica Chimica Acta. 466(1), 175-185.
- 4.Kapoor Namita.Sateesh Khandavilli, Ramesh Panchagnula. (2006).Simultaneous determination of lamivudine and stavudine in antiretroviral fixed dose combinations by first derivative spectrophotometry andhigh performanceliquid chromatography.Journal of pharmaceutical and biomedical analysis. 41(3), 761-765.
- 5.Sankar D G.(2002).Spectrophotometric determination of lamivudine and stavudine.Indian journal of pharmaceutical sciences. 64(5), 504.
- 6.Basavaiah K.BC Somashekar. (2006).Titrimetricand spectrophotometric determination of lamivudine in pharmaceuticals.Indian. , Journal of Chemical Technology 13(1), 7-12.
- 7.Nachname Vorname. (2004) Derivative-differential UV spectrophotometry and compensation technique for the simultaneous determination of zidovudine and lamivudine in human serum. , Die Pharmazie-An International Journal of Pharmaceutical Sciences 59(2), 106-111.
- 8.Shalini S.(2009).Application ofuv-spectrophotometric methods for estimation of lamivudine in tablets.Digest. , Journal of Nanomaterials & Biostructures (DJNB) 4(2), 357-360.
- 9.Sharma R, Mehta K.(2010).Simultaneous spectrophotometric estimation of tenofovir disoproxil fumarate and lamivudine in three component tablet formulation containing efavirenz.Indian journal of pharmaceutical sciences. 72(4), 527-530.
- 10.Reza Mahmoud.Sohrabi and Mahshid Tayefeh Zarkesh. (2014).Spectra resolution for simultaneous spectrophotometric determination of lamivudine and zidovudine components in pharmaceutical formulation of human immunodeficiency virus drug based on using continuous wavelet transform and derivative transform techniques.Talanta. 122(1), 223-228.
- 11.Basavaiah K, Somashekar B C, Ramakrishna V, Rapid. (2007) titrimetric and spectrophotometric assay methods for the determination of lamivudine in pharmaceuticals using iodate and two dyes.Journal of Analytical Chemistry. 62(6), 542-548.
- 12.Severino Grangeiro Jr.(2011).Simultaneous spectrophotometric determination of lamivudine and zidovudine in fixed dose combinations using multivariate calibration.Química Nova. 34(5), 859-863.
- 13.A Manikanta Kumar.(2012).Development and validation of UV Spectrophotometric method for simultaneous estimation of. Lamivudine and Efavirenz in the Pharmaceutical dosage form.Journal of Advanced Pharmacy Education & Research Oct-Dec 2(4), 210-214.
- 14.K C Madu, Ukoha P, Attama A.(2011).Spectrophotometric determination of lamivudine usingchloranilicacid and 2, 3-dichloro-5,6-dicyano-1, 4-benzoquinone (DDQ).American. , Journal of Analytical Chemistry 2(07), 849.
- 15.Vaishali P Nagulwar, Kishor P Bhusari. (2009) A validated UV spectrophotometric method for the simultaneous estimation of Lamivudine, Nevirapine and zidovudine in combined tablet dosage form. , Journal of Pharmacy Research 2(4), 666-669.
- 16.R E Saraya, Elhenawee M, Saleh H. (2020) Silver Nanoparticles Synthesis for Sensitive Spectrophotometric Determination of Sofosbuvir, Lamivudine, and Ritonavir in Pure Forms and Pharmaceutical Dosage Forms. , Journal of AOAC International 103(1), 140-147.
- 17.A S Pereira.(2000).Simultaneous determination of lamivudine and zidovudine concentrations in human seminal plasma using high-performance liquid chromatography and tandem mass spectrometry.Journal of Chromatography B: Biomedical Sciences and Applications. 742(1), 173-183.
- 18.E K Kano.(2005).Determination of lamivudine in human plasma by HPLC and its use in bioequivalence studies.International journal of pharmaceutics.297(1-2):. 73-79.
- 19.Fan B, M G Bartlett, J T Stewart.(2002).Determination of lamivudine/stavudine/efavirenz in human serum using liquid chromatography/electrospray tandem mass spectrometry with ionization polarity switch.Biomedical Chromatography. 16(6), 383-389.
- 20.Kapoor S Khandavilli N.and R.Panchagnula. (2006).Simultaneous determination of lamivudine, stavudine and nevirapine in antiretroviral fixed dose combinations by high performance liquid chromatography.Analytica Chimica Acta. 570(1), 41-45.
- 21.R M Hoetelmans. (1998) determination of (−)-2′-deoxy-3′-thiacytidine (lamivudine) in human plasma, saliva and cerebrospinal fluid by high-performance liquidchromatography with ultraviolet detection.Journal of Chromatography B: Biomedical Sciences and Applications. 713(2), 387-394.
- 22.D A Kumar, G S Rao, Rao J.(2010).Simultaneous determination of lamivudine, zidovudine and abacavir in tablet dosage forms by RP HPLC method.Journal of Chemistry. 7(1), 180-184.
- 23.Bahrami G. (2005) et al.,High-performance liquid chromatographic determination of lamivudine in human serum using liquid–liquid extraction; application to pharmacokinetic studies.Journal of chromatography B. 823(2), 213-217.
- 24.Estrela Rita de Cassia E, Myriam C Salvadori, Suarez‐Kurtz Guilherme. (2004) rapid and sensitive method for simultaneous determination of lamivudine and zidovudine in human serum by on‐line solid‐phase extraction coupled to liquid chromatography/tandem mass spectrometry detection.Rapid communications in mass spectrometry. 18(10), 1147-1155.
- 25.Alnouti Yazen, Catherine A White, Michael G Bartlett.(2004).Determination of lamivudine in plasma, amniotic fluid, and rat tissues by liquid chromatography.Journal of Chromatography B. 803(2), 279-284.
- 26.Fan Bin, James T Stewart.(2002).Determination of zidovudine/lamivudine/nevirapine in human plasma using ion-pair HPLC.Journal of pharmaceutical and biomedical analysis. 28(5), 903-908.
- 27.Tarinas Alicia.(2007).Validation of high-performance liquid chromatography methods for determination of zidovudine, stavudine, lamivudine and indinavir in human plasma.Farmacia Hospitalaria. 31(4), 243-247.
- 28.Kathryn B Kenney.(2000).Simultaneous determinationof zidovudine and lamivudine in human serum using HPLC with tandem mass spectrometry.Journal of pharmaceutical and biomedical analysis. 22(6), 967-983.
- 29.Verweij-van CPWGM Wissen, Aarnoutse R E, Burger D M. (2005) Simultaneous determination of the HIV nucleoside analogue reverse transcriptase inhibitors lamivudine, didanosine, stavudine, zidovudine and abacavir in human plasma by reversed phase high performance liquid chromatography.Journal of chromatography B.816(1-2):. 121-129.
- 30.Li Zhou.(2010).Simultaneous determination of lamivudine, stavudine and nevirapine in human plasma by LC–MS/MS and its application to pharmacokinetic study in clinic.Biomedical Chromatography. 24(9), 926-934.
- 31.Sibel A Ozkan, Uslu Bengi. (2002) Rapid HPLC assay for lamivudine in pharmaceuticals and human serum.Journal of liquid chromatography & related technologies. 25(9), 1447-1456.
- 32.Liu X.(2006).Development and validation of LC coupled with SPE for simultaneous determination of lamivudine, oxymatrine and its active metabolitematrinein dogplasma.Chromatographia.63(9-10):. 483-486.
- 33.Samee Weerasak.(2007).Simultaneous determination of Lamivudine, Stavudine and Nevirapine in the presence of their acid-induced degradation products by HPLC.Thai Pharm Health Sci. , J 2(1), 39-45.
- 34.Joanna J Zheng, Steven T Wu.and Thomas A Emm. (2001).High-performance liquid chromatographic assay for the determination of 2′-deoxy-3′-thiacytidine (lamivudine) in human plasma.Journal of Chromatography B: Biomedical Sciences and Applications. 761(2), 195-201.
- 35.Hwaung JByung.(2007).Simultaneous determination of 17 antiretroviral drugs in human plasma for quantitative analysis with liquid chromatography–tandem mass spectrometry.Biomedical Chromatography. 21(10), 1095-1104.
- 36.Savaşer A.(2007).Determination of abacavir, lamivudine and zidovudine in pharmaceutical tablets, human serum and in drug dissolution studies by HPLC.Chromatographia.65(5-6):. 259-265.
- 37.Jayaseelan S. (2010) et al.,Bioanalytical method development and validation of Lamivudine by. , RP-HPLC method.Int J Chem Tech Res 2(1), 163-7.
- 38.Alnouti Yazen, Catherine A White, Michael G Bartlett.(2004).Simultaneous determination of zidovudine and lamivudine from rat plasma, amniotic fluid and tissues by HPLC.Biomedical Chromatography. 18(9), 641-647.
- 39.Notari Stefania. (2012) et al.,Simultaneous determination of lamivudine, lopinavir, ritonavir, and zidovudine concentration in plasma of HIV‐infected patients by HPLC‐MS/MS.IUBMB life. 64(5), 443-449.
- 40.Akhilesh Vikram Singh, Lila K Nath, Nihar R. (2011) Pani,Development and validation of analytical method for the estimation of lamivudine in rabbit plasma.Journal of pharmaceutical analysis. 1(4), 251-257.
- 41.Malm Mikaela. (2009) et al.,Determination of lamivudine, zidovudine, and nevirapine in capillary blood sampled on filter paper by LC.Journal of Chromatographic Science. 47(10), 855-862.
- 42.Rajani Kumar Valluru, Kumar Praveen, Naveen Babu Kilaru. (2013) throughput LC–MS/MS method for simultaneous determination of tenofovir, lamivudine and nevirapine in human plasma.Journal of Chromatography B. 931(1), 117-126.
- 43.Mahmoud.Alebouyeh and Hossein Amini. (2015).Rapid determination of lamivudine in human plasma by high-performance liquid chromatography.Journal of Chromatography B. 975(1), 40-44.
- 44.Yadav Manish. (2010) et al.,Selective determination of antiretroviral agents tenofovir, emtricitabine, and lamivudine in human plasma by a LC-MS-MS method for a bioequivalence study in healthy Indian subjects.Journal of chromatographic science. 48(9), 704-713.
- 45.Alnouti Yazen. (2005) et al.,Simultaneous determination of zidovudine and lamivudine from rat tissues by liquid chromatography/tandem mass spectrometry.Rapid. Communications in Mass Spectrometry: An International Journal Devoted to the Rapid Dissemination of Up‐to‐the‐Minute Research in Mass Spectrometry 19(4), 503-508.
- 46.Shao Li-hua. (2002) et al.,Determination of Lamivudine Concentration in Human Serum by HPLC.Chinese. , Journal of Pharmaceutical Analysis 22(1), 53-54.
- 47.Kromdijk W. (2013) et al.,Development and validation of an assay for the simultaneous determination of zidovudine, abacavir, emtricitabine, lamivudine, tenofovir and ribavirin in human plasma using liquid chromatography–tandem mass spectrometry.Journal of Chromatography B. 919(1), 43-51.
- 48.Djurdjevic Predrag. (2004) et al.,Chemometric Optimization of a RP‐HPLC Method for the Simultaneous Analysis of Abacavir, Lamivudine, and Zidovudine in Tablets.Analytical letters. 37(13), 2649-2667.
- 49.Joseph E Rower. (2012) et al.,Validation of a sensitive LC/MS/MS method for the determination of zidovudine and lamivudine in human plasma.Biomedical Chromatography. 26(1), 12-20.
- 50.Nerurkar K K. (2003) et al.,Concurrent assay of lamivudine and zidovudine from combination tablets.Indian journal of pharmaceutical sciences. 65(4), 412-417.
- 51.Patro S K. (2010) et al.,Development and Validation ofHigh PerformanceLiquid Chromatographic Method for Determination of Lamivudine from Pharmaceutical Preparation.Journal of Chemistry. 7(1), 117-122.
- 52.De acqueline. (2009) Souza,LC–UV methodology for simultaneous determination of lamivudine and zidovudine in plasma by liquid–liquid extraction.Chromatographia. 69(2), 231-235.
- 53.Palled M S. (2005) et al.Reverse Phase High Performance Liquid Chromatographic DeterminationOfZidovudine And Lamivudine In Tablet Dosage Form.Indian journal of pharmaceutical sciences. 67(1), 110-117.
- 54.Valluru Rajani Kumar. (2013) et al.High throughput LC–MS/MS method for simultaneous determination of zidovudine, lamivudine and nevirapine in human plasma.Journal of Chromatography B. 921(1), 9-14.
- 55.Mandloi D K. (2009) et al.Method development and validation of RP-HPLC in the application of in vitro dissolution study of lamivudine in bulk drug and tablet formulation.J Chem Pharm Res. 1(1), 286-296.
- 56.Meng L I, Jing L U, Xin D I. (2009) determinationof lamivudine and its related substances.Chinese. , Journal of Pharmaceutical Analysis 29(7), 1216-1219.
- 57.Wattananat Triporn.Wiyada Akarawut. (2010).Simultaneous determination of stavudine and lamivudine in human plasma by high performance liquid chromatography and its application to abioavailability study.Southeast. , Asian Journal of Tropical Medicine and Public Health 41(2), 369-377.
- 58.Murali Krishna Matta. (2012) et al.,Simultaneous quantitation of lamivudine, zidovudine and nevirapine in human plasma by liquid chromatography–tandem mass spectrometry and application to a pharmacokinetic study.Acta Pharmaceutica Sinica B. 2(5), 472-480.
- 59.Moji Christianah Adeyeye, Joshi Anjali.(2012).Reversed Phase LC-UV method development and validation for simultaneous determination of three antiretrovirals: lamivudine, zidovudine, nevirapine and possible degradants in a fixed dose pharmaceutical product.Journal. of Pharmaceutical Technology and Drug Research 1(1), 1-4.
- 60.Nandi Utpal. (2013) et al.,Development and validation of an HPLC‐UV method for simultaneous determination of zidovudine, lamivudine, and nevirapine in human plasma and its application to pharmacokinetic study in human volunteers.Drug testing and analysis. 5(6), 485-491.
- 61.Balasekarreddy C. (2010) et al.,Validated HPLC Method for determination of Lamivudine and Stavudine in their formulations.Pharmanest. 1(1), 22-8.
- 62.Dhara S Bhavsar, Bhavini N Patel, Chhaganbhai N Patel. (2012) RP-HPLC method for simultaneous estimation of tenofovir disoproxil fumarate, lamivudine, and efavirenz in combined tablet dosage form. Pharmaceutical methods. 3(2), 73-78.
- 63.A Manikanta Kumar.(2012).Development and Validation of RP-HPLC method for simultaneous estimation of. Lamivudine and Efavirenz in the Pharmaceutical Dosage Form.Journal of Advanced Pharmacy Education & Research Oct-Dec 2(4), 232-238.
- 64.Hye Young Ji.(2010).Quantification of lamivudine in human plasma by hydrophilic interaction chromatography‐tandem mass spectrometry.Journal of separation science.33(6‐7):. 948-954.
- 65.Nagasarapu Mallikarjuna Rao, Dannana Gowri Sankar. (2015) Development and validation of stability-indicating HPLC method for simeltaneous determination of Lamivudine, Tenofovir, and Dolutegravir in bulk and their tablet dosage form. , Future Journal of Pharmaceutical Sciences 1(2), 73-77.
- 66.Anandakumar K. (2013) et al.,RP-HPLC method for simultaneous estimation of lamivudine, tenofovir disoproxil fumarate and efavirenz in tablet formulation.Journal of analytical chemistry. 68(9), 815-821.
- 67.Habte G, Hymete A, A-M I Mohamed. (2009) Simultaneous separation and determination of lamivudine and zidovudine in pharmaceutical formulations using the HPTLC method.Analytical Letters. 42(11), 1552-1570.
- 68.Sudha T, Ravikumar V R, Hemalatha P V. (2010) Validated HPTLC method for simultaneousdetermination of lamivudine and abacavir sulphate in tablet dosage form.International. , Journal of Pharmaceutical Sciences and Research 1(11), 107.
- 69.Chandra P.(2011).Application of high-performance thin-layer chromatographic method for the simultaneous determination of Lamivudine and tenofovir disoproxil fumarate in pharmaceutical dosage form.Journal of the Chilean Chemical Society. 56(2), 702-705.
- 70.Shewiyo D H. (2011) et al.Development and validation of a normal-phase HPTLC method for the simultaneous analysis of lamivudine, stavudine and nevirapine in fixed-dose combination tablets.Journal of pharmaceutical and biomedical analysis. 54(3), 445-450.
- 71.Solomon Gebremedhin.et al.HPTLC-densitometric method development and validationfor simultaneousdetermination of lamivudine, nevirapine and zidovudine in fixed dose combinations.Thai. , Journal of Pharmaceutical Sciences 35(2), 77-88.
- 72.Fan Bin, James T Stewart.(2002).Determination of lamivudine/didanosine/saquinavir in human serum using capillary zone electrophoresis.Journal of liquid chromatography & related technologies. 25(2), 241-249.
- 73.Sekar R, Azhaguvel S.(2005).Simultaneous determination of HIV-protease inhibitors lamivudine and zidovudine in pharmaceutical formulations by micellar electrokinetic chromatography.Journal of pharmaceutical and biomedical analysis.39(3-4):. 653-660.