Polymorphic forms of the sodium salt of 4-tert-butyl-N-[4-chloro-2-(1-oxy-pyridine-4-carbonyl)-phenyl]-benzenesulfonamide

US9139526B2 · kind B2 · utility

Assignee

• CHEMOCENTRYX, INC. · US

Inventors

• Joanna Bis · Cary, US
• David H. Igo · Morrisville, US
• Bert Ho · Lafayette, US
• Deven Santosh SHAH · San Jose, US

Key dates

• Filing date: Jul 20, 2012
• Grant date: Sep 22, 2015
• Expiry date: Jul 20, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61P43/00
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Disclosed are novel polymorphic trihydrated 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 form of the sodium salt of 4-tert-butyl-N-[4-chloro-2-(1-oxy-pyridine-4-carbonyl)-25 phenyl]-benzenesulfonamide (hereinafter “Compound A crystalline trihydrate form I”), wherein the crystalline form is characterized by an X-ray powder diffraction pattern comprising diffraction angles (°28), when measured using Cu Ka radiation, at about 4.5, 9.0, 13.6, 13.9, 15.8, 17.8, 18.2, 18.5, 19.1, 19.9, 20A, 21.2, 22.1, 22.7, 24.3, 25.0, 25.6, 26.2, 26.8, 27.3, 27.6, 28.0, 28.8, and 30.8.