C - Chemistry – Metallurgy – 07 – H
Patent
C - Chemistry, Metallurgy
07
H
C07H 15/12 (2006.01) A61K 47/26 (2006.01)
Patent
CA 2669674
Disclosed are a sodium salt represented by the average formula (I) below, and a method for producing such a sodium salt. (In the formula, m1, n1, m2 and n2 independently represent 0 or a positive number not more than 2, while satisfying m1 + n1 =2, m2 + n2 =2, 0 < m1 + m2 < 4 and 0 < n1 + n2 < 4.) Also disclosed is a decomposition suppressing method which enables to have a sodium salt represented by the average formula (I) coexistent with a sodium salt represented by the general formula (IV) below. This method enables to improve long-term stability of a sodium salt represented by the general formula (IV).
L'invention porte sur un sel de sodium de formule moyenne (I) et sur son procédé de production (dans la formule, m1, n1, m2 et n2 représentent indépendamment 0 ou un nombre positif n'excédant pas 2, tout en satisfaisant aux conditions m1 + n1 =2, m2 + n2 =2, 0 < m1 + m2 < 4 et 0 < n1 + n2 < 4). L'invention porte également sur une méthode de décomposition par suppression permettant de faire coexister un sel de sodium de formule moyenne (I) avec un sel de sodium de formule générale (IV). Cette méthode permet d'améliorer la stabilité à long terme du sel de sodium de formule générale (IV).
Furukawa Ken
Matsuo Kimihiro
Sakurai Shin
Tagami Kenichi
Eisai R&d Management Co. Ltd.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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