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:
Dec. 02, 2025
Filed:
May. 06, 2021
Yonsung Fine Chemical Co., Ltd., Hwaseong-si, KR;
Areum Baek, Suwon-si, KR;
Hyunik Shin, Suwon-si, KR;
Yongseo Park, Suwon-si, KR;
Seongtaek Kim, Suwon-si, KR;
Seunghui Sin, Suwon-si, KR;
YONSUNG FINE CHEMICAL CO., LTD., Hwaseong-si, KR;
Abstract
An eribulin salt formed by combining an eribulin free base with a low molecular weight amine compound through a diacid compound is disclosed. As the diacid compound, edisylic acid, 1,5-naphthalenedisulfonic acid, trans-2-butene-1,4-dicarboxylic acid, pyrophosphoric acid, and combination thereof may be employed. As the amine, ammonia, cyclohexylamine, dicyclohexylamine, and a combination thereof may be employed. The eribulin salt can be crystallized by recrystallization to produce a crystalline eribulin salt with increased purity.