Clinical data
ATC code
  • none
  • 2-methyl-1,3,4,14b-tetrahydro-2H,10H-pyrazino[1,2-a]pyrrolo[2,1-c][1,4]benzodiazepine
CAS Number
PubChem CID
CompTox Dashboard (EPA)
Chemical and physical data
Molar mass253.349 g·mol−1
3D model (JSmol)
  • c42c(N3C(c1cccn1C2)CN(CC3)C)cccc4
  • InChI=1S/C16H19N3/c1-17-9-10-19-14-6-3-2-5-13(14)11-18-8-4-7-15(18)16(19)12-17/h2-8,16H,9-12H2,1H3 checkY
 ☒NcheckY (what is this?)  (verify)

Aptazapine (developmental code name CGS-7525A) is a tetracyclic antidepressant (TeCA) that was assayed in clinical trials for the treatment of depression in the 1980s but was never marketed.[1][2][3] It is a potent α2-adrenergic receptor antagonist with about 10 times the strength of the related compound mianserin and has also been shown to act as a 5-HT2 receptor antagonist and H1 receptor inverse agonist, while having no significant effects on the reuptake of serotonin or norepinephrine.[1][4] Based on its pharmacological profile, aptazapine may be classified as a noradrenergic and specific serotonergic antidepressant (NaSSA).

See also


  1. ^ a b Liebman JM, Lovell RA, Braunwalder A, et al. (January 1983). "CGS 7525A, a new, centrally active alpha 2 adrenoceptor antagonist". Life Sciences. 32 (4): 355–63. doi:10.1016/0024-3205(83)90081-4. PMID 6131367.
  2. ^ Author Unknown (1985). Annual Reports in Medicinal Chemistry (Volume 20). Boston: Academic Press. p. 352. ISBN 0-12-040520-2. ((cite book)): |author= has generic name (help)
  3. ^ David J. Triggle (1997). Dictionary of pharmacological agents. London: Chapman & Hall. ISBN 0-412-46630-9.
  4. ^ Gower AJ, Broekkamp CL, Rijk HW, Van Delft AM (1988). "Pharmacological evaluation of in vivo tests for alpha 2-adrenoceptor blockade in the central nervous system and the effects of the enantiomers of mianserin and its aza-analog ORG 3770". Archives Internationales de Pharmacodynamie et de Thérapie. 291: 185–201. PMID 2896489.