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Excuse me, is the drug rosiglitazone sodium tablet a new national drug? Is the patent number 99 120250.3 true? What is the content of patent protection?
The patent number of CN99 120250.3 is:

Application (patent)No. CN99 120250.3 Date of application 1999.09.24.

Thiazolidine derivative and medical use thereof

Publication (announcement)No. CN 1253 136 Publication (announcement) date 2000.05. 17

Main classification number c07d41712 classification number C07D4 17/ 12; a 6 1k 3 1/4427; A6 1P3/ 10

Priority of release date

Applicant (patent right): Institute of Toxicology and Medicine, Chinese Academy of Military Medical Sciences Address: No.27 Taiping Road, Beijing 100850.

Inventor (designer) Song Li; Xie Yunde; Zhang Tao international application

International announcement of entry date

Tang, the patent agency, is an agent of the Patent and Trademark Office of China Council for the Promotion of International Trade.

abstract

Compounds of formula (I): wherein M+ represents a pharmaceutically acceptable metal cation, and n = 1-4 is an integer. A preparation method of the compound, a pharmaceutical composition containing the compound and an application thereof in treating and/or preventing hyperglycemia.

Sovereignty terms

Claim 1. A compound of formula (I) or a solvate or hydrate thereof, wherein: M+ represents a pharmaceutically acceptable metal cation, and n is an integer of -4.

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