FINGOLIMOD POLYMORPHS AND THEIR PROCESSES
First Claim
Patent Images
1. Fingolimod hydrochloride crystalline Form-α
- characterized by X-ray powder diffraction pattern comprising at least 5 characteristic 2θ
°
peaks selected from the XRPD peak set of 10.51, 15.20, 19.27, 21.77, 23.12, 24.91, 26.14, 26.46, 29.03, 33.47 and 35.46±
0.1 2θ
°
.
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Accused Products
Abstract
The present invention provides crystalline polymorphic forms of Fingolimod HCl (I) and processes for preparation thereof.
The application provides processes for preparation of crystalline polymorphic forms-α, β and μ substantially free from process related impurities. The crystalline polymorphic forms of Fingolimod HCl (I) obtained by the processes according to the present invention having an XRDP pattern as per FIGS. 1, 3 and 5, which are useful as active pharmaceutical ingredient in pharmaceutical compositions for the treatment or prevention of autoimmune related disorder including multiple sclerosis.
5 Citations
15 Claims
-
1. Fingolimod hydrochloride crystalline Form-α
- characterized by X-ray powder diffraction pattern comprising at least 5 characteristic 2θ
°
peaks selected from the XRPD peak set of 10.51, 15.20, 19.27, 21.77, 23.12, 24.91, 26.14, 26.46, 29.03, 33.47 and 35.46±
0.1 2θ
°
. - View Dependent Claims (2, 8)
- characterized by X-ray powder diffraction pattern comprising at least 5 characteristic 2θ
-
3. Fingolimod hydrochloride crystalline Form-α
- characterized by X-ray powder diffraction pattern comprising at least 5 characteristic 2θ
°
peaks selected from the XRPD peak set of 10.51, 15.20, 19.27, 21.77, 23.12, 24.91, 26.14, 26.46, 29.03, 33.47 and 35.46±
0.1 2θ
° and
DSC isotherm comprising the endothermic peaks ranging between 40 to 43°
C. (Peak-1), 65 to 68°
C. (Peak-2), 105 to 110°
C. (Peak-3) and/or 270 to 280°
C. (Peak-4). - View Dependent Claims (4)
- characterized by X-ray powder diffraction pattern comprising at least 5 characteristic 2θ
-
5. A process for preparing Fingolimod hydrochloride crystalline Form-α
- comprising the steps of—
a. Combining the Fingolimod hydrochloride with an organic acid b. Optionally heating up to about 40-50°
C.c. cooling the solution up to about 0-5°
C.d. isolating the crystalline Form-α
. - View Dependent Claims (6)
- comprising the steps of—
-
7. Fingolimod hydrochloride crystalline Form-β
- characterized by X-ray powder diffraction pattern comprising at least 4 characteristic 2θ
°
peaks selected from the XRPD peak set of 3.54, 7.07, 10.66, 15.35, 20.52, 21.43 and 25.10±
0.1 2θ
°
.
- characterized by X-ray powder diffraction pattern comprising at least 4 characteristic 2θ
-
9. Fingolimod hydrochloride crystalline Form-β
- characterized by X-ray powder diffraction pattern comprising at least 4 characteristic 2θ
°
peaks selected from the XRPD peak set of 3.54, 7.07, 10.66, 15.35, 20.52, 21.43 and 25.10±
0.1 2θ
° and
DSC isotherm comprising the endothermic peaks ranging between 40 to 45°
C. (Peak-1), 65 to 70°
C. (Peak-2), 107 to 115°
C. (Peak-3) and/or 265 to 270°
C. (Peak-4) - View Dependent Claims (10)
- characterized by X-ray powder diffraction pattern comprising at least 4 characteristic 2θ
-
11. A process for preparing Fingolimod hydrochloride crystalline Form-α
- comprising the steps of—
a. Combining the Fingolimod hydrochloride with organic solvent b. Optionally heating up to about 40-50°
C. followed by coolingc. isolating the crystalline Form-β
using another co-solvent by recrystallization. - View Dependent Claims (12)
- comprising the steps of—
-
13. Fingolimod hydrochloride crystalline Form-μ
- characterized by X-ray powder diffraction pattern comprising at least 4 characteristic 2θ
°
peaks selected from the XRPD peak set of 3.54, 8.65, 10.64, 12.49, 19.45, 21.38 and 24.05±
0.1 2θ
°
. - View Dependent Claims (14)
- characterized by X-ray powder diffraction pattern comprising at least 4 characteristic 2θ
-
15. A process for preparing Fingolimod hydrochloride crystalline Form-μ
- comprising the steps of—
a. Raising the Fingolimod hydrochloride temperature up to at least melting point but less than 130°
C.b. Cooling the melt liquid c. isolating the crystalline Form-μ
.
- comprising the steps of—
Specification