Analysis of pharmaceutical solubility and stability
First Claim
Patent Images
1. A method of screening compositions that comprise a compound-of-interest, which comprises:
- (a) preparing an array of substantially non-aqueous samples, wherein each sample in the array comprises a controlled amount of the compound-of-interest and a liquid excipient, and wherein at least two of the samples differ with respect to the liquid excipient they contain and/or the concentration of the compound-of-interest, and further wherein each sample has a concentration greater than about 1 mg/mL and a viscosity greater than about 100 centipoise;
(b) using a positive displacement pump to dispense less than 250 microliters of an excipient with a viscosity of at least 100 centipoise;
(c) identifying samples in the array wherein at least some of the compound-of-interest dissolved in the liquid excipient; and
(d) ranking the identified samples.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and systems are disclosed that can be used for the automated preparation and analysis of mixtures comprising a compound-of-interest (e.g., the active ingredient of a pharmaceutical composition) and one or more excipients. Specific embodiments of the invention are particularly suited for the precise preparation and screening of small amounts of excipients, compounds-of-interest, and mixtures thereof. The invention is also well suited for the preparation and screening of small amounts of mixtures comprising high concentrations of compounds-of-interest.
43 Citations
18 Claims
-
1. A method of screening compositions that comprise a compound-of-interest, which comprises:
-
(a) preparing an array of substantially non-aqueous samples, wherein each sample in the array comprises a controlled amount of the compound-of-interest and a liquid excipient, and wherein at least two of the samples differ with respect to the liquid excipient they contain and/or the concentration of the compound-of-interest, and further wherein each sample has a concentration greater than about 1 mg/mL and a viscosity greater than about 100 centipoise;
(b) using a positive displacement pump to dispense less than 250 microliters of an excipient with a viscosity of at least 100 centipoise;
(c) identifying samples in the array wherein at least some of the compound-of-interest dissolved in the liquid excipient; and
(d) ranking the identified samples. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification