WO2023175542 - STABILIZATION OF PHENOBARBITAL SODIUM FOR INJECTION

National phase entry is expected:
Publication Number WO/2023/175542
Publication Date 21.09.2023
International Application No. PCT/IB2023/052546
International Filing Date 15.03.2023
Title [English] STABILIZATION OF PHENOBARBITAL SODIUM FOR INJECTION [French] STABILISATION DE PHÉNOBARBITAL SODIQUE POUR INJECTION
Applicants ** SUN PHARMA ADVANCED RESEARCH COMPANY LIMITED 17/B, Mahal Industrial Estate Off Mahakali Caves Road, Andheri (East) Mumbai, Maharashtra 400093, IN
Inventors ** SHAH, Malay 408 B1, Ashwamegh 3, Samrajya Extension, Akota Vadodara, Gujarat 390020, IN BOROLE, Bhushan 45 Shriraj, Hindu Housing Society Tapi nagar, Bhusawal Dist. Jalgaon, Maharashtra 425201, IN PATEL, Ravi 11 Ashruti Tenaments, Opp - Akruti Nagar Jitodia Road Anand, Gujarat 388001, IN KHOPADE, Ajay Jaysingh 12 Bansuri Bungalows, Pashabhai Park, Race Course Vadodara, Gujarat 390007, IN
Priority Data 63/319,918  15.03.2022  US 17/715,491  07.04.2022  US
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Abstract [English] The present invention relates to a lyophilized pharmaceutical composition of hydrolytically unstable pharmaceutical compounds, such as phenobarbital or salts thereof. The present invention also relates to an aqueous solution for injection of phenobarbital or salts thereof that is reconstituted from the lyophilized pharmaceutical composition. The pharmaceutical compositions of the present disclosure have an ethanol content in the range from about 12000 ppm to about 25000 ppm. The composition of the present disclosure, in certain embodiments, is stable following 36 months of storage, wherein the total impurities do not exceed 0.2%. The pharmaceutical compositions of the present disclosure may be used for the treatment of neonatal seizures. The present invention further relates to methods of preparing a lyophilized composition of phenobarbital sodium and to lyophilized pharmaceutical compositions of phenobarbital sodium prepared using the same. [French] La présente invention concerne une composition pharmaceutique lyophilisée de composés pharmaceutiques hydrolytiquement instables, tels que le phénobarbital ou les sels de celui-ci. La présente invention concerne également une solution aqueuse pour l'injection de phénobarbital ou de sels de celui-ci, qui est reconstitué à partir de la composition pharmaceutique lyophilisée. Les compositions pharmaceutiques de la présente divulgation ont une teneur en éthanol dans la plage d'environ 12 000 ppm à environ 25 000 ppm. La composition de la présente divulgation, dans certains modes de réalisation, est stable après 36 mois de stockage, les impuretés totales ne dépassant pas 0,2 %. Les compositions pharmaceutiques de la présente divulgation peuvent être utilisées pour le traitement de convulsions néonatales. La présente invention concerne en outre des procédés de préparation d'une composition lyophilisée de phénobarbital sodique et des compositions pharmaceutiques lyophilisées de phénobarbital sodique préparées à l'aide de celle-ci.