Gull in Sunset. Rovinj, Croatia.
Sep 2009. (c) Copyright 2009 by
A. Avdeef.

DISSOLUTION SOLUBILITY PERMEABILITY
pKa

Management at in-ADME Research

Alex Avdeef, PhD, FAAPS   Internationally-recognized expert in solution chemistry (128 publications, 6 patents, 4 books, over 10,083 citations.  Over 40 years: teaching, researching, & developing methods, instruments, & analysis software for measurement of ionization constants (pKa), solubility (practically-insoluble molecules), dissolution (small-volume, mechanistic, pH-dependent), & permeability (pH-dependent PAMPA, cell-culture, & animal models).

Forty Years of Instrument Design Experience


World's first autotrator driven by a microcomputer - used to study binding of actinides by chelating
agents. UC Berkeley, c.1976. Programmed in Livermore BASIC assembler, using a paper tape reader.


World's first microcomputerized protein titrator - used to study metalothionein binding of
cadmium. Syracuse University, c. 1979. Programmed in Microsoft's FORTRAN compiler
run on the CPM operating system. Pictured is Dr. Jerry Zabronsky.


World's first multiple known addition autotitrator, the ORION960. Orion
Research, c. 1984. Programmed in C compiler and assembly language.
The ORION960 is still being sold by ThermoFisher.


World's first commercial pKa analyzer. Sirius Analytical Instruments Ltd., c. 1992.
Programmed in C compiler and assembly language. Predecessor of the Sirius
GLpKa and T3 instruments.


World's first potentiometric solubility analyzer - the Gemini Profiler. pION INC, c. 1997.
Programmed in Visual C++. Uses the automated dissolution template titration method.