Nonacog alfa (BAX326) is a recombinant human factor IX that can be used for the research of haemophilia B[1].
References
[1] Fukutake K, et al. Postmarketing safety and effectiveness of recombinant factor IX (nonacog alfa) in Japanese patients with haemophilia B. Haemophilia. 2019 Jul;25(4):e247-e256. DOI:10.1111/hae.13783