The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 07, 2006
Filed:
Dec. 18, 2003
Tetsuya Shintaku, Osaka, JP;
Tadashi Katsura, Osaka, JP;
Nobushige Itaya, Osaka, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
The present invention relates to a crystal of bicalutamide having a defined form, as well as economical and industrially practical production methods of bicalutamide and a crystal thereof, which are superior in environmental benignity and safety. Accordingly, the present invention provides a production method of bicalutamide represented by the formula (I): which includes at least a step of reacting a compound represented by the formula (3): with an oxidizing agent, a production method of a crystal of bicalutamide, as well as a crystal form of bicalutamide as defined by X-ray diffraction (XRD) or solidC NMR measurement.