Related Experiment Video
Updated: Jun 22, 2026

Preparation of DMMTAV and DMDTAV Using DMAV for Environmental Applications: Synthesis, Purification, and Confirmation
Published on: March 9, 2018
Overcoming problems of compound storage in DMSO: solvent and process alternatives
Timothy J Waybright1, John R Britt, Thomas G McCloud
1Laboratory of Proteomics and Analytical Technologies, Advanced Technologies Program, SAIC-Frederick, Inc., Frederick, Maryland 21702, USA.
Abstract:
The common practice of preparing storage libraries of compounds in 100% DMSO solution well in advance of bioassay brings with it difficulties that affect the accuracy of the data obtained. This publication presents a series of studies done on a subset of compounds that are difficult to bioassay because they precipitate from DMSO solution. These compounds are members of a frequently used, diverse compound library of the sort commonly used in the high-throughput screening (HTS) environment. Experiments were performed to determine the concentration of drug in solution above the precipitate, observe the time course and effect of various mixtures of solvents upon precipitation, measure the viscosity of cosolvents to determine compatibility with HTS, determine water absorption rates for various solvent combinations, and investigate resolubilization techniques to ensure proper drug solution for HTS. Recommendations are made on how to best maximize the probability that problem compounds will remain in solution, be accurately transferred during assay plate production, and, as a result, be accurately bioassayed at the specified molar concentration.
Related Concept Videos
Solvents
A...
Carboxylic Acids to Methylesters: Alkylation using Diazomethane
Solubility
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules, atoms, and/or ions)...
Entropy and Solvation
In Vitro Drug Dissolution: Alternative Methods
Recrystallization: Solid–Solution Equilibria
