Intra-Cellular Therapies, Inc.
ORGANIC COMPOUNDS

Abstract:

The invention relates to a particular enantiomer of a substituted heterocycle fused gamma-carboline, in free, solid, pharmaceutically acceptable salt and/or substantially pure form as described herein, pharmaceutical compositions thereof, and methods of use in the treatment of diseases involving the 5-HT.sub.2A receptor, and pathways involving the dopamine D.sub.1 and D.sub.2 receptor signaling system.