Polymorphic forms of the sodium salt of 4-tert-butyl-N-[4-chloro-2-(1-oxy-pyridine-4-carbonyl)-phenyl]-benzene sulfonamide
First Claim
1. A crystalline form of a sodium salt of 4-tert-butyl-N-[4-chloro-2-(1-oxy-pyridine-4-carbonyl)-phenyl]-benzenesulfonamide in the form of a solvate, wherein the solvate consists of one unit of water and one unit of 1,4-dioxane.
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Abstract
Disclosed are novel polymorphic solvated and desolvated forms of the sodium salt of 4-tert-butyl-N-[4-chloro-2-(1-oxy-pyridine-4-carbonyl)phenyl]-benzenesulfonamide. One embodiment of the present invention is directed to a crystalline sodium salt of 4-tert-butyl-N-[4-chloro-2-(1-oxy-pyridine-4-carbonyl)-phenyl]benzenesulfonamide (hereinafter “Compound A-1,4-dioxane/water solvate”), wherein the crystalline form is characterized by an X-ray powder diffraction pattern comprising diffraction angles (° 28), when measured using Cu Ku radiation, at about 4.0, 8.1, 10.1, 14.2, 16.2, 18.6, 20.3, 24.7, 25.0, and 26.5.
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15 Claims
- 1. A crystalline form of a sodium salt of 4-tert-butyl-N-[4-chloro-2-(1-oxy-pyridine-4-carbonyl)-phenyl]-benzenesulfonamide in the form of a solvate, wherein the solvate consists of one unit of water and one unit of 1,4-dioxane.
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