Crystalline forms of a janus kinase inhibitor

摘要

The present invention relates to crystalline forms of the Janus kinase (JAK) inhibitor 3-((3S,4R)-3-methyl-6-(7H-pyrrolo [2,3-d]pyrimidin-4-yl)-1,6-diazaspiro[3.4]octan-1-yl)-3-oxopropanenitrile (Compound A), as well as, compositions thereof, methods of their preparation, methods of use thereof and methods of quantitation.