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Last Updated: August 13, 2022

Details for Patent: 7,301,023


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Summary for Patent: 7,301,023
Title:Chiral salt resolution
Abstract: A method for resolving enantiomers of a compound containing the structure of the forula: ##STR00001## wherein R.sup.4 or R.sup.5 may contan one or more asymmetric centers, by mixing a racemic mixture of enantiomers of a compound, containing the structure of said formula; in a solvent, with a resolving compound having a defined sterospecificity, to form a solution and with said resolving agent being capable of binding with at least one but not all of said enantiomers to form a precipitate, containing said at least one of said enantiomers in sterospecific form and collecting either the precipitate and purifying it or collecting the solution with contained other of said enantiomers and recrystallizing the enantiomer contained in said solution.
Inventor(s): Flanagan; Mark E. (Gales Ferry, CT), Munchhof; Michael J. (Salem, CT)
Assignee: Pfizer Inc. (New York, NY)
Application Number:10/154,699
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 7,301,023
Patent Claim Types:
see list of patent claims
Use; Formulation;

Drugs Protected by US Patent 7,301,023

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

International Family Members for US Patent 7,301,023

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
African Regional IP Organization (ARIPO) 1859 See Plans and Pricing
Argentina 037321 See Plans and Pricing
Argentina 045680 See Plans and Pricing
Austria 519741 See Plans and Pricing
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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