Clinical data
Other namesBTRX-140; CYM-53093; NMRA-140; NMRA-335140
  • 1-[6-ethyl-8-fluoro-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl]-N-(oxan-4-yl)piperidin-4-amine
CAS Number
PubChem CID
Chemical and physical data
Molar mass453.562 g·mol−1
3D model (JSmol)
  • CCC1=CC2=C(C(=C(N=C2C(=C1)F)N3CCC(CC3)NC4CCOCC4)C5=NC(=NO5)C)C
  • InChI=1S/C25H32FN5O2/c1-4-17-13-20-15(2)22(25-27-16(3)30-33-25)24(29-23(20)21(26)14-17)31-9-5-18(6-10-31)28-19-7-11-32-12-8-19/h13-14,18-19,28H,4-12H2,1-3H3

Navacaprant (developmental code names include BTRX-335140, BTRX-140, CYM-53093, NMRA-335140, and NMRA-140), is a selective κ-opioid receptor antagonist which is under development for the treatment of major depressive disorder.[1][2][3] As of December 2023, navacaprant is in phase 3 clinical trials for this indication.[4]

See also


  1. ^ "BlackThorn Therapeutics Advances Phase 2 Clinical Development for Selective KOR Antagonist, BTRX-140, in Neuropsychiatric Disorders". BlackThorn Therapeutics. Archived from the original on 2020-01-25. Retrieved 2020-01-25.
  2. ^ "BTRX 335140 - AdisInsight". Retrieved 2020-01-25.
  3. ^ Guerrero M, Urbano M, Kim EK, Gamo AM, Riley S, Abgaryan L, Leaf N, Van Orden LJ, Brown SJ, Xie JY, Porreca F, Cameron MD, Rosen H, Roberts E (February 2019). "Design and Synthesis of a Novel and Selective Kappa Opioid Receptor (KOR) Antagonist (BTRX-335140)". J. Med. Chem. 62 (4): 1761–1780. doi:10.1021/acs.jmedchem.8b01679. PMC 6395531. PMID 30707578.
  4. ^ Neumora Therapeutics, Inc. (2024-02-20). A Phase 3, Randomized, Double-blind, Placebo-controlled Study to Evaluate the Effects of Oral NMRA-335140 Versus Placebo in Participants With Major Depressive Disorder (Report).