UJ POTENCIALIS GYOGYSZERVEGYULETEK EGYENSULYI OLDHATOSAGI VIZSGALATA VIZBEN, 1-OKTANOLBAN ES CIKLOHEXANBAN

Translated title of the contribution: The equilibrium solubility of new potential drugs in water, 1-octanol and cyclohexane

Józan Miklós, K. Takács-Novák, G. Szász

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A method was developed for the determinations of the exact value of isotherm solubility equilibrium of organic compounds in various solvents, that can be used as a standard operating procedure, too. It was used for the determination of equilibrium solubility data of twenty two new organic compounds in three solvents: water, 1-octanol and cyclohexane. The data often imidazo-quinazolone and twelve pyrido-quinazolone derivatives were compared with their chemical structures moreover within and between the structural and solvents series. It was proved, that these compounds are not ideal solutes, due to a specific interaction with the solvents which is constant for the imidazo-quinazolones, while if is randomly altering at the different pyrido-quinazolones. The octanol/water partitioning data were calculated using octanol and water solubility data, and those were compared with separately, accurately measured data obtained by the traditional shake-flask method. Our data support, that - as it can be found in most of the literature - at compounds which form special interaction with the solvent the partition coefficient cannot be calculated from the solubility data, and reversely the water solubility cannot be estimated using the determined partition coefficient and some correction factors. It was demonstrated, that the calculated partition coefficient can be biassed randomly up to and order of magnitude, and in some cases even the tendency of those is false in a series.

Original languageHungarian
Pages (from-to)141-146
Number of pages6
JournalActa Pharmaceutica Hungarica
Volume66
Issue number3
Publication statusPublished - 1996

Fingerprint

1-Octanol
Solubility
Water
Octanols
Pharmaceutical Preparations
Cyclohexane

ASJC Scopus subject areas

  • Pharmaceutical Science

Cite this

@article{f8c0bd3ec316421187242416a8ec544a,
title = "UJ POTENCIALIS GYOGYSZERVEGYULETEK EGYENSULYI OLDHATOSAGI VIZSGALATA VIZBEN, 1-OKTANOLBAN ES CIKLOHEXANBAN",
abstract = "A method was developed for the determinations of the exact value of isotherm solubility equilibrium of organic compounds in various solvents, that can be used as a standard operating procedure, too. It was used for the determination of equilibrium solubility data of twenty two new organic compounds in three solvents: water, 1-octanol and cyclohexane. The data often imidazo-quinazolone and twelve pyrido-quinazolone derivatives were compared with their chemical structures moreover within and between the structural and solvents series. It was proved, that these compounds are not ideal solutes, due to a specific interaction with the solvents which is constant for the imidazo-quinazolones, while if is randomly altering at the different pyrido-quinazolones. The octanol/water partitioning data were calculated using octanol and water solubility data, and those were compared with separately, accurately measured data obtained by the traditional shake-flask method. Our data support, that - as it can be found in most of the literature - at compounds which form special interaction with the solvent the partition coefficient cannot be calculated from the solubility data, and reversely the water solubility cannot be estimated using the determined partition coefficient and some correction factors. It was demonstrated, that the calculated partition coefficient can be biassed randomly up to and order of magnitude, and in some cases even the tendency of those is false in a series.",
author = "J{\'o}zan Mikl{\'o}s and K. Tak{\'a}cs-Nov{\'a}k and G. Sz{\'a}sz",
year = "1996",
language = "Hungarian",
volume = "66",
pages = "141--146",
journal = "Acta Pharmaceutica Hungarica",
issn = "0001-6659",
publisher = "Magyar Gyogyszereszeti Tarsasag",
number = "3",

}

TY - JOUR

T1 - UJ POTENCIALIS GYOGYSZERVEGYULETEK EGYENSULYI OLDHATOSAGI VIZSGALATA VIZBEN, 1-OKTANOLBAN ES CIKLOHEXANBAN

AU - Miklós, Józan

AU - Takács-Novák, K.

AU - Szász, G.

PY - 1996

Y1 - 1996

N2 - A method was developed for the determinations of the exact value of isotherm solubility equilibrium of organic compounds in various solvents, that can be used as a standard operating procedure, too. It was used for the determination of equilibrium solubility data of twenty two new organic compounds in three solvents: water, 1-octanol and cyclohexane. The data often imidazo-quinazolone and twelve pyrido-quinazolone derivatives were compared with their chemical structures moreover within and between the structural and solvents series. It was proved, that these compounds are not ideal solutes, due to a specific interaction with the solvents which is constant for the imidazo-quinazolones, while if is randomly altering at the different pyrido-quinazolones. The octanol/water partitioning data were calculated using octanol and water solubility data, and those were compared with separately, accurately measured data obtained by the traditional shake-flask method. Our data support, that - as it can be found in most of the literature - at compounds which form special interaction with the solvent the partition coefficient cannot be calculated from the solubility data, and reversely the water solubility cannot be estimated using the determined partition coefficient and some correction factors. It was demonstrated, that the calculated partition coefficient can be biassed randomly up to and order of magnitude, and in some cases even the tendency of those is false in a series.

AB - A method was developed for the determinations of the exact value of isotherm solubility equilibrium of organic compounds in various solvents, that can be used as a standard operating procedure, too. It was used for the determination of equilibrium solubility data of twenty two new organic compounds in three solvents: water, 1-octanol and cyclohexane. The data often imidazo-quinazolone and twelve pyrido-quinazolone derivatives were compared with their chemical structures moreover within and between the structural and solvents series. It was proved, that these compounds are not ideal solutes, due to a specific interaction with the solvents which is constant for the imidazo-quinazolones, while if is randomly altering at the different pyrido-quinazolones. The octanol/water partitioning data were calculated using octanol and water solubility data, and those were compared with separately, accurately measured data obtained by the traditional shake-flask method. Our data support, that - as it can be found in most of the literature - at compounds which form special interaction with the solvent the partition coefficient cannot be calculated from the solubility data, and reversely the water solubility cannot be estimated using the determined partition coefficient and some correction factors. It was demonstrated, that the calculated partition coefficient can be biassed randomly up to and order of magnitude, and in some cases even the tendency of those is false in a series.

UR - http://www.scopus.com/inward/record.url?scp=0030135819&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030135819&partnerID=8YFLogxK

M3 - Article

VL - 66

SP - 141

EP - 146

JO - Acta Pharmaceutica Hungarica

JF - Acta Pharmaceutica Hungarica

SN - 0001-6659

IS - 3

ER -