摘要 |
Provided herein is an impurity of laquinimod, N-ethyl-N-phenyl-1,2-dihydro-4-hydroxy-1- methyl-2-oxoquinoline-3-carboxamide (deschloro laquinimod impurity), and process for preparation and isolation thereof. Provided further herein is a highly pure laquinimod or a pharmaceutically acceptable salt thereof substantially free of deschloro laquinimod impurity, processes for the preparation thereof, and pharmaceutical compositions comprising highly pure laquinimod or a pharmaceutically acceptable salt thereof substantially free of deschloro laquinimod impurity. |
申请人 |
ACTAVIS GROUP PTC EHF;DIXIT, GIRISH;SHARMA, KRISHNADATT;PRADHAN, NITIN, SHARADCHANDRA |
发明人 |
DIXIT, GIRISH;SHARMA, KRISHNADATT;PRADHAN, NITIN, SHARADCHANDRA |