TY  - JOUR
AU  - Orlović, D
AU  - Radulović, D
AU  - Vujić, Zorica
PY  - 2004
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/519
AB  - An HPLC method was developed for the determination of S-carboxymethyl-L-cysteine, methylparaben and related compounds in cough syrup preparations. The HPLC operating conditions used were acetonitrile-methanol-water (120:280:600, V/V/V) pH adjusted to 4.0 with 0.1 M HC1, on a 5um Spherisorb ODS2 column (250 mm x 4.6 mm) with a flow rate of 1 mL min(-1) injection volume was 10 muL and absorbance was monitored at 210 nm with 0.05 a.u.f.s. sensitivity.
PB  - Springer Heidelberg, Heidelberg
T2  - Chromatographia
T1  - Determination of S-carboxymethyl-L-cysteine, methylparaben and their degradation products in syrup preparations
VL  - 60
IS  - 5-6
SP  - 329
EP  - 333
DO  - 10.1365/s10337-004-0371-0
ER  - 

@article{
author = "Orlović, D and Radulović, D and Vujić, Zorica",
year = "2004",
abstract = "An HPLC method was developed for the determination of S-carboxymethyl-L-cysteine, methylparaben and related compounds in cough syrup preparations. The HPLC operating conditions used were acetonitrile-methanol-water (120:280:600, V/V/V) pH adjusted to 4.0 with 0.1 M HC1, on a 5um Spherisorb ODS2 column (250 mm x 4.6 mm) with a flow rate of 1 mL min(-1) injection volume was 10 muL and absorbance was monitored at 210 nm with 0.05 a.u.f.s. sensitivity.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Chromatographia",
title = "Determination of S-carboxymethyl-L-cysteine, methylparaben and their degradation products in syrup preparations",
volume = "60",
number = "5-6",
pages = "329-333",
doi = "10.1365/s10337-004-0371-0"
}

Orlović, D., Radulović, D.,& Vujić, Z.. (2004). Determination of S-carboxymethyl-L-cysteine, methylparaben and their degradation products in syrup preparations. in Chromatographia
Springer Heidelberg, Heidelberg., 60(5-6), 329-333.
https://doi.org/10.1365/s10337-004-0371-0

Orlović D, Radulović D, Vujić Z. Determination of S-carboxymethyl-L-cysteine, methylparaben and their degradation products in syrup preparations. in Chromatographia. 2004;60(5-6):329-333.
doi:10.1365/s10337-004-0371-0 .

Orlović, D, Radulović, D, Vujić, Zorica, "Determination of S-carboxymethyl-L-cysteine, methylparaben and their degradation products in syrup preparations" in Chromatographia, 60, no. 5-6 (2004):329-333,
https://doi.org/10.1365/s10337-004-0371-0 . .

TY  - JOUR
AU  - Vujić, Zorica
AU  - Radulović, D
AU  - Lucić, B
AU  - Erić, Slavica
AU  - Kuntić, Vesna
PY  - 2003
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/414
AB  - Maprotiline, desipramine and moclobemide are widely used in the treatment of depression. The content of these antidepressants in bulk drug and pharmaceutical formulations were determined by TLC and in situ densitometry using a Camag scanner In order to achieve the best condition, mathematical statistical model factorial design was chosen. The partition coefficients, calculated by applying commercial drug design software, were correlated with chromatographic behaviour of these substances. After separation on Silica gel GF(254) using propano-lethanol-ammonium solution (25%) (8:2:0.3 v/v/v) as the mobile phase, the chromatographic zones corresponding to the spots were scanned at 254 nm. Analysing Maprotilin(R) tablets, Pertofran(R) dragees and Auromid(R) film tablets examined the applicability of the method for samples and dosage forms.
PB  - Vieweg, Wiesbaden
T2  - Chromatographia
T1  - UV-densitometric determination of maprotiline, desipramine and moclobemide in pharmaceutical dosage forms
VL  - 57
IS  - 9-10
SP  - 687
EP  - 689
DO  - 10.1007/BF02491750
ER  - 

@article{
author = "Vujić, Zorica and Radulović, D and Lucić, B and Erić, Slavica and Kuntić, Vesna",
year = "2003",
abstract = "Maprotiline, desipramine and moclobemide are widely used in the treatment of depression. The content of these antidepressants in bulk drug and pharmaceutical formulations were determined by TLC and in situ densitometry using a Camag scanner In order to achieve the best condition, mathematical statistical model factorial design was chosen. The partition coefficients, calculated by applying commercial drug design software, were correlated with chromatographic behaviour of these substances. After separation on Silica gel GF(254) using propano-lethanol-ammonium solution (25%) (8:2:0.3 v/v/v) as the mobile phase, the chromatographic zones corresponding to the spots were scanned at 254 nm. Analysing Maprotilin(R) tablets, Pertofran(R) dragees and Auromid(R) film tablets examined the applicability of the method for samples and dosage forms.",
publisher = "Vieweg, Wiesbaden",
journal = "Chromatographia",
title = "UV-densitometric determination of maprotiline, desipramine and moclobemide in pharmaceutical dosage forms",
volume = "57",
number = "9-10",
pages = "687-689",
doi = "10.1007/BF02491750"
}

Vujić, Z., Radulović, D., Lucić, B., Erić, S.,& Kuntić, V.. (2003). UV-densitometric determination of maprotiline, desipramine and moclobemide in pharmaceutical dosage forms. in Chromatographia
Vieweg, Wiesbaden., 57(9-10), 687-689.
https://doi.org/10.1007/BF02491750

Vujić Z, Radulović D, Lucić B, Erić S, Kuntić V. UV-densitometric determination of maprotiline, desipramine and moclobemide in pharmaceutical dosage forms. in Chromatographia. 2003;57(9-10):687-689.
doi:10.1007/BF02491750 .

Vujić, Zorica, Radulović, D, Lucić, B, Erić, Slavica, Kuntić, Vesna, "UV-densitometric determination of maprotiline, desipramine and moclobemide in pharmaceutical dosage forms" in Chromatographia, 57, no. 9-10 (2003):687-689,
https://doi.org/10.1007/BF02491750 . .

TY  - JOUR
AU  - Čudina, Olivera
AU  - Brborić, Jasmina
AU  - Vujić, Zorica
AU  - Radulović, D
AU  - Vladimirov, S
PY  - 2000
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/247
AB  - Fluocortolone and its esters are synthetic corticosteroids used topically in the treatment of various skin disorders. A method that can be successfully used for the separation and determination of fluocortolone pivalate and fluocortolone hexanoate in suppositories was developed. This method is based on reverse-phase HPLC on Supelcosil LC-18 (25 cm x 4.6 mm, 5 mu m), using methanol-acetonitrile-water-glacial acetic acid (17: 46:37:0.4 v/v/v/v) as mobile phase at a flow rate of 3.0 ml/min. Detection was carried out using a UV detector at 238 nm. The method developed was validated, and calibration curves were established dependent on peak area. The validated ranges for fluocortolone pivalate and fluocortolone hexanoate are 15-305 mu g/ml (r = 0.9995) and 15-315 mu g/ml (r = 0.9996), respectively. The limits of detection and the limits of quantification for both esters were also determined.
PB  - Elsevier Science Sa, Lausanne
T2  - Farmaco
T1  - Determination of fluocortolone pivalate and fluocortolone hexanoate in suppositories using reverse-phase HPLC
VL  - 55
IS  - 2
SP  - 125
EP  - 127
DO  - 10.1016/S0014-827X(00)00003-3
ER  - 

@article{
author = "Čudina, Olivera and Brborić, Jasmina and Vujić, Zorica and Radulović, D and Vladimirov, S",
year = "2000",
abstract = "Fluocortolone and its esters are synthetic corticosteroids used topically in the treatment of various skin disorders. A method that can be successfully used for the separation and determination of fluocortolone pivalate and fluocortolone hexanoate in suppositories was developed. This method is based on reverse-phase HPLC on Supelcosil LC-18 (25 cm x 4.6 mm, 5 mu m), using methanol-acetonitrile-water-glacial acetic acid (17: 46:37:0.4 v/v/v/v) as mobile phase at a flow rate of 3.0 ml/min. Detection was carried out using a UV detector at 238 nm. The method developed was validated, and calibration curves were established dependent on peak area. The validated ranges for fluocortolone pivalate and fluocortolone hexanoate are 15-305 mu g/ml (r = 0.9995) and 15-315 mu g/ml (r = 0.9996), respectively. The limits of detection and the limits of quantification for both esters were also determined.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Farmaco",
title = "Determination of fluocortolone pivalate and fluocortolone hexanoate in suppositories using reverse-phase HPLC",
volume = "55",
number = "2",
pages = "125-127",
doi = "10.1016/S0014-827X(00)00003-3"
}

Čudina, O., Brborić, J., Vujić, Z., Radulović, D.,& Vladimirov, S.. (2000). Determination of fluocortolone pivalate and fluocortolone hexanoate in suppositories using reverse-phase HPLC. in Farmaco
Elsevier Science Sa, Lausanne., 55(2), 125-127.
https://doi.org/10.1016/S0014-827X(00)00003-3

Čudina O, Brborić J, Vujić Z, Radulović D, Vladimirov S. Determination of fluocortolone pivalate and fluocortolone hexanoate in suppositories using reverse-phase HPLC. in Farmaco. 2000;55(2):125-127.
doi:10.1016/S0014-827X(00)00003-3 .

Čudina, Olivera, Brborić, Jasmina, Vujić, Zorica, Radulović, D, Vladimirov, S, "Determination of fluocortolone pivalate and fluocortolone hexanoate in suppositories using reverse-phase HPLC" in Farmaco, 55, no. 2 (2000):125-127,
https://doi.org/10.1016/S0014-827X(00)00003-3 . .

TY  - JOUR
AU  - Orlović, D
AU  - Radulović, D
AU  - Ivanović, D
AU  - Vujić, Zorica
PY  - 2000
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/254
AB  - A sensitive, accurate and reproducible high performance liquid chromatographic (HPLC) procedure has been developed for the separation and analysis of lorazepam and related compounds. A 20-muL sample was separated by reversed-phase HPLC on a 150 mm x 4.6 mm, 5-mum particle, Wakosil column with 0.1 M ammonium acetate (pH adjusted to 6.0 with acetic acid)-acetonitrile-methanol, 1:1:1 (v/v) as mobile phase.
PB  - Vieweg, Wiesbaden
T2  - Chromatographia
T1  - HPLC determination of lorazepam and lorazepam-related compounds in pharmaceutical formulations
VL  - 52
IS  - 11-12
SP  - 732
EP  - 734
DO  - 10.1007/BF02490997
ER  - 

@article{
author = "Orlović, D and Radulović, D and Ivanović, D and Vujić, Zorica",
year = "2000",
abstract = "A sensitive, accurate and reproducible high performance liquid chromatographic (HPLC) procedure has been developed for the separation and analysis of lorazepam and related compounds. A 20-muL sample was separated by reversed-phase HPLC on a 150 mm x 4.6 mm, 5-mum particle, Wakosil column with 0.1 M ammonium acetate (pH adjusted to 6.0 with acetic acid)-acetonitrile-methanol, 1:1:1 (v/v) as mobile phase.",
publisher = "Vieweg, Wiesbaden",
journal = "Chromatographia",
title = "HPLC determination of lorazepam and lorazepam-related compounds in pharmaceutical formulations",
volume = "52",
number = "11-12",
pages = "732-734",
doi = "10.1007/BF02490997"
}

Orlović, D., Radulović, D., Ivanović, D.,& Vujić, Z.. (2000). HPLC determination of lorazepam and lorazepam-related compounds in pharmaceutical formulations. in Chromatographia
Vieweg, Wiesbaden., 52(11-12), 732-734.
https://doi.org/10.1007/BF02490997

Orlović D, Radulović D, Ivanović D, Vujić Z. HPLC determination of lorazepam and lorazepam-related compounds in pharmaceutical formulations. in Chromatographia. 2000;52(11-12):732-734.
doi:10.1007/BF02490997 .

Orlović, D, Radulović, D, Ivanović, D, Vujić, Zorica, "HPLC determination of lorazepam and lorazepam-related compounds in pharmaceutical formulations" in Chromatographia, 52, no. 11-12 (2000):732-734,
https://doi.org/10.1007/BF02490997 . .

TY  - JOUR
AU  - Vujić, Zorica
AU  - Radulović, D
AU  - Agbaba, Danica
PY  - 1997
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/173
AB  - This paper describes a simple densitometric method for the determination of metroprolol tartrate in tablets and ampoules. After separation on silica gel GF254 plates, using acetone-methanol-triethylamine as the mobile phase for the tablets and acetone-triethylamine for ampoules, the chromatographic zones corresponding to the spots of metoprolol were scanned. Quantitation was performed using a computer-controlled Camag TLC scanner and applying five-point calibration with polynomial regression. The calibration function was established in the ranges 1-28 mu g for tablets and 1-9 mu g for ampoules. The results obtained are precise and reproducible, with recovery values of 99.1-99.4%.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Journal of Pharmaceutical and Biomedical Analysis
T1  - Densitometric determination of metoprolol tartrate in pharmaceutical dosage forms
VL  - 15
IS  - 5
SP  - 581
EP  - 585
DO  - 10.1016/S0731-7085(96)01857-2
ER  - 

@article{
author = "Vujić, Zorica and Radulović, D and Agbaba, Danica",
year = "1997",
abstract = "This paper describes a simple densitometric method for the determination of metroprolol tartrate in tablets and ampoules. After separation on silica gel GF254 plates, using acetone-methanol-triethylamine as the mobile phase for the tablets and acetone-triethylamine for ampoules, the chromatographic zones corresponding to the spots of metoprolol were scanned. Quantitation was performed using a computer-controlled Camag TLC scanner and applying five-point calibration with polynomial regression. The calibration function was established in the ranges 1-28 mu g for tablets and 1-9 mu g for ampoules. The results obtained are precise and reproducible, with recovery values of 99.1-99.4%.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Journal of Pharmaceutical and Biomedical Analysis",
title = "Densitometric determination of metoprolol tartrate in pharmaceutical dosage forms",
volume = "15",
number = "5",
pages = "581-585",
doi = "10.1016/S0731-7085(96)01857-2"
}

Vujić, Z., Radulović, D.,& Agbaba, D.. (1997). Densitometric determination of metoprolol tartrate in pharmaceutical dosage forms. in Journal of Pharmaceutical and Biomedical Analysis
Pergamon-Elsevier Science Ltd, Oxford., 15(5), 581-585.
https://doi.org/10.1016/S0731-7085(96)01857-2

Vujić Z, Radulović D, Agbaba D. Densitometric determination of metoprolol tartrate in pharmaceutical dosage forms. in Journal of Pharmaceutical and Biomedical Analysis. 1997;15(5):581-585.
doi:10.1016/S0731-7085(96)01857-2 .

Vujić, Zorica, Radulović, D, Agbaba, Danica, "Densitometric determination of metoprolol tartrate in pharmaceutical dosage forms" in Journal of Pharmaceutical and Biomedical Analysis, 15, no. 5 (1997):581-585,
https://doi.org/10.1016/S0731-7085(96)01857-2 . .

TY  - JOUR
AU  - Pecanac, D
AU  - Karljiković-Rajić, Katarina
AU  - Radulović, D
PY  - 1997
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/158
AB  - The UV spectrophotometric investigations obtained for the reaction between L-DOPA and copper(II)ion contribute to the clarification of equilibrium conditions of the complex formation both in the excess of metal ion and ligand. For the complex obtained in the excess of copper(II)ion optimum conditions were established as well as the stoichiometric composition(1:1) and conditional stability constant logK' =5.70+/-0.05. The proposed method using copper(II)ion, as the analytical reagent in excess, for the UV spectrophotometric determination is suitable for accurate, sensitive and selective analysis of L-DOPA both in pure and dosage forms containing benzerazide.
PB  - Marcel Dekker Inc, New York
T2  - Analytical Letters
T1  - UV spectrophotometric microdetermination of L-DOPA based on complex formation with copper(II)ion
VL  - 30
IS  - 10
SP  - 1833
EP  - 1841
DO  - 10.1080/00032719708001701
ER  - 

@article{
author = "Pecanac, D and Karljiković-Rajić, Katarina and Radulović, D",
year = "1997",
abstract = "The UV spectrophotometric investigations obtained for the reaction between L-DOPA and copper(II)ion contribute to the clarification of equilibrium conditions of the complex formation both in the excess of metal ion and ligand. For the complex obtained in the excess of copper(II)ion optimum conditions were established as well as the stoichiometric composition(1:1) and conditional stability constant logK' =5.70+/-0.05. The proposed method using copper(II)ion, as the analytical reagent in excess, for the UV spectrophotometric determination is suitable for accurate, sensitive and selective analysis of L-DOPA both in pure and dosage forms containing benzerazide.",
publisher = "Marcel Dekker Inc, New York",
journal = "Analytical Letters",
title = "UV spectrophotometric microdetermination of L-DOPA based on complex formation with copper(II)ion",
volume = "30",
number = "10",
pages = "1833-1841",
doi = "10.1080/00032719708001701"
}

Pecanac, D., Karljiković-Rajić, K.,& Radulović, D.. (1997). UV spectrophotometric microdetermination of L-DOPA based on complex formation with copper(II)ion. in Analytical Letters
Marcel Dekker Inc, New York., 30(10), 1833-1841.
https://doi.org/10.1080/00032719708001701

Pecanac D, Karljiković-Rajić K, Radulović D. UV spectrophotometric microdetermination of L-DOPA based on complex formation with copper(II)ion. in Analytical Letters. 1997;30(10):1833-1841.
doi:10.1080/00032719708001701 .

Pecanac, D, Karljiković-Rajić, Katarina, Radulović, D, "UV spectrophotometric microdetermination of L-DOPA based on complex formation with copper(II)ion" in Analytical Letters, 30, no. 10 (1997):1833-1841,
https://doi.org/10.1080/00032719708001701 . .

TY  - JOUR
AU  - Agatonović-Kuštrin, Snežana
AU  - Živanović, L
AU  - Zečević, Mira
AU  - Radulović, D
PY  - 1997
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/154
AB  - A multifactor optimisation technique is successfully applied to develop a new spectrophotometric method in which diclofenac sodium is analysed and determined as it's Fe(III) complex. The effect of simultaneously varying the pH, ionic strength and concentration of colour reagents in the reaction mixture were studied. A four-variable two-level factorial design was used to investigate the significance of each variable and interactions between them. A response surface design was used to optimise complex formation and extraction. It was established that diclofenac reacts with Fe(III) chloride, in the presence of ammonium thiocyanate, in the pH range 4.2-6.5, forming a red chloroform extractable (2:1) complex with maximum absorbance at 481 nm. By applying the methods of Sommer and Job involving non-equimolar solutions the conditional stability constant of the complex, at the optimum pH of 6.0 and an ionic strength mu = 0.19M, was found to be 10(6.4). Good agreement with Beer's law was found for diclofenac concentrations up to mmol l(-1). The nominal percent recovery of diclofenac was 98.8% (n = 10). The lower limit of sensitivity of the method was found to be 14.7 mu g ml(-1).
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Journal of Pharmaceutical and Biomedical Analysis
T1  - Spectrophotometric study of diclofenac-Fe(III) complex
VL  - 16
IS  - 1
SP  - 147
EP  - 153
DO  - 10.1016/S0731-7085(97)00016-2
ER  - 

@article{
author = "Agatonović-Kuštrin, Snežana and Živanović, L and Zečević, Mira and Radulović, D",
year = "1997",
abstract = "A multifactor optimisation technique is successfully applied to develop a new spectrophotometric method in which diclofenac sodium is analysed and determined as it's Fe(III) complex. The effect of simultaneously varying the pH, ionic strength and concentration of colour reagents in the reaction mixture were studied. A four-variable two-level factorial design was used to investigate the significance of each variable and interactions between them. A response surface design was used to optimise complex formation and extraction. It was established that diclofenac reacts with Fe(III) chloride, in the presence of ammonium thiocyanate, in the pH range 4.2-6.5, forming a red chloroform extractable (2:1) complex with maximum absorbance at 481 nm. By applying the methods of Sommer and Job involving non-equimolar solutions the conditional stability constant of the complex, at the optimum pH of 6.0 and an ionic strength mu = 0.19M, was found to be 10(6.4). Good agreement with Beer's law was found for diclofenac concentrations up to mmol l(-1). The nominal percent recovery of diclofenac was 98.8% (n = 10). The lower limit of sensitivity of the method was found to be 14.7 mu g ml(-1).",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Journal of Pharmaceutical and Biomedical Analysis",
title = "Spectrophotometric study of diclofenac-Fe(III) complex",
volume = "16",
number = "1",
pages = "147-153",
doi = "10.1016/S0731-7085(97)00016-2"
}

Agatonović-Kuštrin, S., Živanović, L., Zečević, M.,& Radulović, D.. (1997). Spectrophotometric study of diclofenac-Fe(III) complex. in Journal of Pharmaceutical and Biomedical Analysis
Pergamon-Elsevier Science Ltd, Oxford., 16(1), 147-153.
https://doi.org/10.1016/S0731-7085(97)00016-2

Agatonović-Kuštrin S, Živanović L, Zečević M, Radulović D. Spectrophotometric study of diclofenac-Fe(III) complex. in Journal of Pharmaceutical and Biomedical Analysis. 1997;16(1):147-153.
doi:10.1016/S0731-7085(97)00016-2 .

Agatonović-Kuštrin, Snežana, Živanović, L, Zečević, Mira, Radulović, D, "Spectrophotometric study of diclofenac-Fe(III) complex" in Journal of Pharmaceutical and Biomedical Analysis, 16, no. 1 (1997):147-153,
https://doi.org/10.1016/S0731-7085(97)00016-2 . .

TY  - JOUR
AU  - Pecanac, D
AU  - Karljiković-Rajić, Katarina
AU  - Radulović, D
PY  - 1996
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/140
PB  - Govi-Verlag Gmbh, Eschborn
T2  - Pharmazie
T1  - Copper(II)-tartrate system as a potential mobile phase additive for enantioseparation of some chiral pharmaceuticals
VL  - 51
IS  - 2
SP  - 124
EP  - 125
UR  - https://hdl.handle.net/21.15107/rcub_farfar_140
ER  - 

@article{
author = "Pecanac, D and Karljiković-Rajić, Katarina and Radulović, D",
year = "1996",
publisher = "Govi-Verlag Gmbh, Eschborn",
journal = "Pharmazie",
title = "Copper(II)-tartrate system as a potential mobile phase additive for enantioseparation of some chiral pharmaceuticals",
volume = "51",
number = "2",
pages = "124-125",
url = "https://hdl.handle.net/21.15107/rcub_farfar_140"
}

Pecanac, D., Karljiković-Rajić, K.,& Radulović, D.. (1996). Copper(II)-tartrate system as a potential mobile phase additive for enantioseparation of some chiral pharmaceuticals. in Pharmazie
Govi-Verlag Gmbh, Eschborn., 51(2), 124-125.
https://hdl.handle.net/21.15107/rcub_farfar_140

Pecanac D, Karljiković-Rajić K, Radulović D. Copper(II)-tartrate system as a potential mobile phase additive for enantioseparation of some chiral pharmaceuticals. in Pharmazie. 1996;51(2):124-125.
https://hdl.handle.net/21.15107/rcub_farfar_140 .

Pecanac, D, Karljiković-Rajić, Katarina, Radulović, D, "Copper(II)-tartrate system as a potential mobile phase additive for enantioseparation of some chiral pharmaceuticals" in Pharmazie, 51, no. 2 (1996):124-125,
https://hdl.handle.net/21.15107/rcub_farfar_140 .