Details for Patent: 4,904,769

Summary for Patent: 4,904,769

Title:	Highly pure acarbose
Abstract:	A purified acarbose which contains less than 10% by weight of sugar-like secondary components is obtained by column chromatograph of a solution of prepurified acarbose with a pH 4 to 7. The column contains as a packing material a weakly acid cation exchanger which has carboxyl groups and is based on dextran, agarose and cellulose or exchangers which are derived from the latter with the addition of polyamide.
Inventor(s):	Rauenbusch; Erich (Wuppertal, DE)
Assignee:	Bayer Aktiengesellschaft (Leverkusen, DE)
Application Number:	06/940,713
Patent Claim Types: see list of patent claims	Composition; Process;

Drugs Protected by US Patent 4,904,769

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Submissiondate

Foreign Priority and PCT Information for Patent: 4,904,769

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
Germany	3543999	Dec 13, 1985

International Family Members for US Patent 4,904,769

Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Austria	71951
Bulgaria	49497
Canada	1288768
China	1013866