Results 161 to 170 of about 7,878 (217)

Predicting aqueous solubility by QSPR modeling

Journal of Molecular Graphics and Modelling, 2021
The aqueous solubility is predicted here using quantitative structure property relationship (QSPR) models. In this study, we examine whether descriptors that individually yield favorable models for the prediction of the Gibbs energy of solvation and sublimation can be used in combination with octanol-water partition coefficient to produce QSPR models ...
Nastaran Meftahi   +2 more
openaire   +2 more sources

QSPR modeling of hyperpolarizabilities

Journal of Molecular Modeling, 2007
The polarizabilities and the first and second hyperpolarizabilities of 219 conjugated organic compounds are modeled by QSPR (quantitative structure activity relationship) based on a large pool of constitutional, topological, electronic and quantum chemical descriptors calculated by CODESSA Pro (comprehensive descriptors for structural and statistical ...
Alan R, Katritzky   +3 more
openaire   +2 more sources

QSPR modeling of UV absorption intensities

Journal of Computer-Aided Molecular Design, 2007
Literature UV absorption intensities at 260 nm and 25 degrees C in water of a diverse set of 805 organic compounds when analyzed by CODESSA Pro software using an initial pool of 800 + descriptors provide a significant QSPR correlation (R (2) = 0.692). Concurrently, a neural networks approach was used to develop a corresponding nonlinear model.
Alan R, Katritzky   +3 more
openaire   +2 more sources

Conformation-Dependent QSPR Models: logPOW

Journal of Chemical Information and Modeling, 2011
Quantitative structure-property relationships for predicting the water-octanol partition coefficient, logP(OW), are reported. The models are based on local properties calculated at the standard isodensity surface using semiempirical molecular orbital theory and use descriptors obtained as the areas of the surface found in each bin in a predefined ...
Muehlbacher, M.   +4 more
openaire   +3 more sources

Surface-Integral QSPR Models:  Local Energy Properties

Journal of Chemical Information and Modeling, 2005
Surface-integral models based on AM1 semiempirical molecular orbital calculations are presented for the free energies of solvation in water, n-octanol, and chloroform and for the enthalpy of solvation in water. A parametrized function of four local properties calculated at the isodensity surface (the molecular electrostatic potential, local ionization ...
Bernd, Ehresmann   +2 more
openaire   +2 more sources

QSPR-modeling of oligophenylene melting points

Journal of Structural Chemistry, 2006
QSPR-modeling of melting temperatures has been performed for oligophenylenes of diverse structures and different molecular weights. It has been shown that optimization of correlation weights of graph local invariants can be used for prediction of melting points of oligomers.
I. N. Nurgaliev   +5 more
openaire   +1 more source

QSAR/QSPR Modeling: Introduction

2015
Development of predictive quantitative structure–activity relationship (QSAR) models plays a significant role in the design of purpose-specific fine chemicals including pharmaceuticals. Considering the wide application of different types of chemicals in human life, QSAR modeling is a useful tool for prediction of biological activity, physicochemical ...
Kunal Roy   +2 more
openaire   +1 more source

QSPR Models of β-dihydroagarofuran Derivatives

International Journal of Quantitative Structure-Property Relationships, 2017
The use of chemical pesticides, although the most effective method for controlling insects, may in the long-term result in pest resistance development as well as it may impact on food quality, the environment and human health. Therefore, the botanical insecticides are interesting alternatives to minimize these undesirable effects, including a secondary
Cunha, Elaine Fontes Ferreira da   +6 more
openaire   +1 more source

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