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Automated, material-sparing physicochemical analysis for early understanding of molecular ionization and lipophilicity — critical parameters influencing solubility, permeability, and absorption.
Understanding key physicochemical properties such as pKa, LogP, and LogD is essential for predicting molecular behavior during drug development. These parameters influence solubility, permeability, absorption, and formulation strategy, making them critical for early decision-making.
Using advanced automated platforms and material-sparing analytical methods, Crystal Pharmatech provides rapid and accurate physicochemical characterization to help scientists evaluate molecular properties earlier in the development process and make more informed, data-driven decisions.
Automated pH and UV metric titration enables precise determination of key physicochemical properties, including pKa, LogP, and LogD. These parameters provide critical insights:
Characterize physicochemical interactions that influence crystal form and solid-state stability.
Generate reliable data that support absorption, distribution, and exposure predictions.
Evaluate solubility behavior across different pH environments to guide formulation design and reduce downstream development risks.
The pKa of a compound defines its ionization state across physiological pH ranges and plays a critical role in solubility, membrane permeability, salt selection, and formulation pH strategy. Accurate pKa determination is essential for rational salt screening and for predicting absorption and bioavailability in vivo.
LogP describes the distribution of a compound between octanol and water and serves as a key indicator of molecular lipophilicity. High LogP values may indicate potential challenges with aqueous solubility and metabolic stability, while very low values can suggest limited membrane permeability. LogP is a critical parameter for ADME profiling and BCS classification.
LogD extends LogP by accounting for the ionization state of a molecule at a specific pH. Because physiological environments span a range of pH values (such as stomach, intestine, and plasma), LogD at physiologically relevant pH levels (e.g., pH 7.4) provides a more accurate predictor of drug distribution, permeability, and in vivo absorption.
pKa, LogP, and LogD measurements provide critical physicochemical insights that inform early drug development decisions. At Crystal Pharmatech, these data integrate directly into our broader Developability Assessment workflow, supporting solid form selection, solubility and stability studies, and PBPK modeling inputs.
By combining automated physicochemical measurements with advanced in silico modeling using GastroPlus®, we deliver a comprehensive understandingof molecular properties at the earliest stages of development.
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Our capabilities span three specialized platforms:
Small Molecule
Crystal Bio Solutions
Crystal NAX
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