Patent ID: 8895604

Claim:
A crystalline form of (1r,4r)-6′-fluoro-N,N-dimethyl-4-phenyl-4′,9′-dihydro-3′H-spiro[cyclohexane-1,1′-pyrano[3,4,b]indol]-4-amine hydrochloride, which has one or more X-ray diffraction peaks (CuKα radiation) selected from the group consisting of 10.6±0.2 (2Θ), 17.2±0.2 (2Θ), 18.6±0.2 (2Θ), 19.3±0.2 (2Θ), 22.2±0.2 (2Θ), 26.7±0.2 (2Θ), 29.3±0.2 (2Θ); and/or one or more Raman peaks selected from the group consisting of 183±2 cm −1 , 919±2 cm −1 , 1001±2 cm −1 , 1300±2 cm −1 , 1569±2 cm −1 , 1583±2 cm −1 , 2992±2 cm −1 , 3054±2 cm −1 and 3069±2 cm −1 .