A stable, sterile aqueous solution of a compound of formula (I): in which A is a C alkylene group with a chain length between NH and N(O)R′R″ of at least 2 carbon atoms and R′ and R″ are each separately selected from C
1-4
alkyl groups and C
2-4
hydroxyalkyl and C
2-4
dihydroxyalkyl groups, or R′ and R″ together are a C
2-6
alkylene group, is formulated in a unit dosage form in a sealed container, said solution having a concentration of the compound of formula (I) up to 150 mg/ml and a pH in the range of 5 to 9. The solution may be prepared without a freeze drying step.
Process for the preparation of aq4n
申请人:Matthews Timothy William Ian
公开号:US20070161808A1
公开(公告)日:2007-07-12
A process for the preparation of compound AQ4N of formula (2) or a salt or solvate thereof wherein the said process includes the reaction step: Formula (1), Formula (2), where compound AQ4 of formula (1) is oxidised to compound AQ4N of formula (2) with an oxidising agent at a reaction temperature not exceeding 10° C.