Crystalline form of nicotinamide riboside
Provided are crystalline forms of nicotinamide riboside, including a Form II of nicotinamide riboside chloride: nicotinamide riboside chloride. Also disclosed are pharmaceutical compositions comprising the crystalline Form II of nicotinamide riboside chloride, and methods of producing such pharmaceutical compositions. In other aspects, the present disclosure pertains to methods comprising administering to a subject the crystalline Form II of nicotinamide riboside chloride. The present disclosure also provides methods of preparing the crystalline Form II of nicotinamide riboside chloride. Also provided are a crystalline Form II of nicotinamide riboside chloride that is prepared according to any of the disclosed methods for preparing the crystalline Form II.
1. A crystalline Form II of nicotinamide riboside chloride
2. The crystalline Form II according to claim 1 that is characterized by a powder X-ray diffraction pattern having peaks at 21.9, 22.1, and 24.7 degrees two theta±0.2 degrees two theta.
3. The crystalline Form II according to claim 1 that is characterized by a powder X-ray diffraction pattern having peaks at 21.2, 21.9, 22.1, 24.7, and 33.8 degrees two theta±0.2 degrees two theta.
4. The crystalline Form II according to claim 1 that is characterized by a powder X-ray diffraction pattern having peaks at 21.2, 21.9, 22.1, 23.9, 24.7, 29.6, and 33.8 degrees two theta±0.2 degrees two theta.
5. The crystalline Form II according to claim 1 that is characterized by a powder X-ray diffraction pattern having peaks at 10.2, 10.7, 13.8, 21.2, 21.9, 22.1, 23.2, 23.9, 24.7, 29.6, and 33.8 degrees two theta±0.2 degrees two theta.
6. The crystalline Form II according to claim 1 that is characterized by a powder X-ray diffraction pattern substantially as shown in FIG. 1 .
7. The crystalline Form II according to claim 1 that is characterized by a powder X-ray diffraction pattern having peaks substantially as shown in Table 1±0.2 degrees two theta.
8. The crystalline Form II according to claim 1 that is characterized by an IR spectrum having peaks at 678.3, 695.6, and 1097.5 cm −1 ±0.2 cm −1 .
9. The crystalline Form II according to claim 1 that is characterized by an IR spectrum having peaks at 678.3, 695.6, 930.1, 1084.7, and 1097.5 cm −1 ±0.2 cm −1 .
10. The crystalline Form II according to claim 1 that is characterized by an IR spectrum having peaks at 678.3, 695.6, 930.1, 998.6, 1084.7, 1097.5, and 1412.6 cm −1 ±0.2 cm −1 .
11. The crystalline Form II according to claim 1 that is characterized by an IR spectrum substantially as shown in FIG. 2 .
12. The crystalline Form II according to claim 1 that is characterized by an IR spectrum having peaks substantially as shown in Table 2±0.2 cm −1 .
13. The crystalline Form II according to claim 1 that is characterized by a differential scanning calorimetry thermogram having a peak at about 126.57° C.
14. The crystalline Form II according to claim 1 wherein said crystalline Form II is anhydrous.
15. A pharmaceutical composition comprising the crystalline Form II according to claim 1 and a pharmaceutically acceptable excipient.
16. A method of producing a pharmaceutical composition comprising combining the crystalline Form II according to claim 1 with a pharmaceutically acceptable excipient.
17. A method comprising administering to a subject the crystalline Form II according to claim 1 or the pharmaceutical composition of claim 15 .
18. A method of preparing a crystalline Form II of nicotinamide riboside chloride
comprising:
forming a mixture comprising nicotinamide riboside chloride and a polar solvent with hydrogen bonding;
optionally isolating a wetcake comprising said nicotinamide riboside chloride from said mixture and forming a second mixture comprising said nicotinamide riboside chloride and a further quantity of said polar solvent with hydrogen bonding or a different polar solvent with hydrogen bonding;
raising the temperature of the mixture or the second mixture;
and,
isolating crystalline Form II of nicotinamide riboside chloride from the mixture or the second mixture.
19. The method according to claim 18 wherein said mixture comprises the nicotinamide riboside chloride, the polar solvent with hydrogen bonding, and water.
20. The method according to claim 18 wherein the polar solvent with hydrogen bonding in said mixture is methanol.
21. The method according to claim 18 wherein the polar solvent with hydrogen bonding in said second mixture is acetone.
22. The method according to claim 21 wherein said second mixture further comprises water.
23. The method according to claim 18 wherein said mixture is formed by combining crystalline nicotinamide riboside chloride and said polar solvent with hydrogen bonding.
24. A crystalline Form II of nicotinamide riboside chloride that is prepared according to the method of claim 18 .