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Statements

Subject Item
n2:RIV%2F00216275%3A25310%2F11%3A39883426%21RIV12-MZ0-25310___
rdf:type
skos:Concept n10:Vysledek
dcterms:description
Capecitabine has been studied by a combined potentiometric and spectrophotometric titration at T = (298.15, 310.15) K at different ionic strengths. The thermodynamic dissociation constant was estimated by non-linear regression of (pK(a), I) data: pK(a)(T) = 8.97(1) at T = 298.15 K and pK(a)(T) = 8.74(0) at T = 310.15 K, where the figure in the brackets is the standard deviation in last significant digits. Thermodynamic parameters Delta H degrees/kJ.mol(-1) and Delta S degrees/J.K-1.mol(-1) have been determined from the temperature variation of thermodynamic dissociation constants. The value of enthalpy Delta H degrees = 33.9 kJ.mol(-1) shows the dissociation process is endothermic and the value of entropy Delta S degrees = -51.9J.K-1.mol(-1) indicates that the dissociation is not a spontaneous process. Capecitabine has been studied by a combined potentiometric and spectrophotometric titration at T = (298.15, 310.15) K at different ionic strengths. The thermodynamic dissociation constant was estimated by non-linear regression of (pK(a), I) data: pK(a)(T) = 8.97(1) at T = 298.15 K and pK(a)(T) = 8.74(0) at T = 310.15 K, where the figure in the brackets is the standard deviation in last significant digits. Thermodynamic parameters Delta H degrees/kJ.mol(-1) and Delta S degrees/J.K-1.mol(-1) have been determined from the temperature variation of thermodynamic dissociation constants. The value of enthalpy Delta H degrees = 33.9 kJ.mol(-1) shows the dissociation process is endothermic and the value of entropy Delta S degrees = -51.9J.K-1.mol(-1) indicates that the dissociation is not a spontaneous process.
dcterms:title
Determination of the thermodynamic dissociation constant of capecitabine using spectrophotometric and potentiometric titration data Determination of the thermodynamic dissociation constant of capecitabine using spectrophotometric and potentiometric titration data
skos:prefLabel
Determination of the thermodynamic dissociation constant of capecitabine using spectrophotometric and potentiometric titration data Determination of the thermodynamic dissociation constant of capecitabine using spectrophotometric and potentiometric titration data
skos:notation
RIV/00216275:25310/11:39883426!RIV12-MZ0-25310___
n10:predkladatel
n11:orjk%3A25310
n3:aktivita
n15:P n15:Z
n3:aktivity
P(NS9831), Z(MSM0021627502)
n3:cisloPeriodika
6
n3:dodaniDat
n17:2012
n3:domaciTvurceVysledku
n16:6862519 n16:1940384
n3:druhVysledku
n12:J
n3:duvernostUdaju
n6:S
n3:entitaPredkladatele
n21:predkladatel
n3:idSjednocenehoVysledku
193914
n3:idVysledku
RIV/00216275:25310/11:39883426
n3:jazykVysledku
n18:eng
n3:klicovaSlova
HYPERQUAD; ESAB2M; SQUAD; SPECFIT; Capecitabine; Dissociation constant; Potentiometric titration; Spectrophotometric titration
n3:klicoveSlovo
n5:Spectrophotometric%20titration n5:ESAB2M n5:Dissociation%20constant n5:Potentiometric%20titration n5:SPECFIT n5:SQUAD n5:HYPERQUAD n5:Capecitabine
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[0854D52DE9B4]
n3:nazevZdroje
Journal of Chemical Thermodynamics
n3:obor
n19:CB
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
3
n3:projekt
n20:NS9831
n3:rokUplatneniVysledku
n17:2011
n3:svazekPeriodika
43
n3:tvurceVysledku
Ferenčíková, Zuzana Vrána, Aleš Meloun, Milan
n3:wos
000289600400013
n3:zamer
n13:MSM0021627502
s:issn
0021-9614
s:numberOfPages
8
n4:doi
10.1016/j.jct.2011.01.012
n7:organizacniJednotka
25310