Crystalline and amorphous forms of nalbuphine hydrochloride

1. A form of nalbuphine HCl selected from the group consisting of Form C, Form D, Form F, Form G, Form H, Form I, Form K, Form U and amorphous Form Z; wherein:

Form C has PXRD °2θ peaks at about 9.76, about 15.22 and about 19.51;

Form D has PXRD °2θ peaks at about 6.22, about 11.11, about 13.15 and about 14.89;

Form F has PXRD °2θ peaks at about 7.89, about 12.9, about 14.22 and about 15.76;

Form G has PXRD °2θ peaks at about 8.05, about 10.93, about 11.32, about 15.70 and about 17.41;

Form H has PXRD °2θ peaks at about 11.23, about 15.37 and about 18.91;

Form I has PXRD °2θ peaks at about 11.64, about 13.38, about 14.64 and about 15.57;

Form K has PXRD °2θ peaks at about 10.98, about 11.58, about 13.35 and about 15.36;

Form U has PXRD °2θ peaks at about 12.18, about 13.04, about 13.52 and about 19.04;

and amorphous Form Z has a glass transition temperature of 48° C.

2. A form of nalbuphine HCl selected from the group consisting of Form C, Form D, Form F, Form G, Form H, Form I, Form K, Form U and amorphous Form Z; wherein:

Form C has PXRD °2θ peaks at 9.76, 10.75, 12.37, 14.35, 15.22 and 16.27;

Form D has PXRD °2θ peaks at 6.22, 11.11, 11.35, 11.77, 12.52 and 13.15;

Form F has PXRD °2θ peaks at 7.89, 10.59, 11.73, 12.9, 14.22 and 15.75;

Form G has PXRD °2θ peaks at 8.05, 10.93, 11.32, 12.55, 14.56 and 15.70;

Form H has PXRD °2θ peaks at 11.23, 11.80, 12.52, 14.38, 15.37 and 18.10;

Form I has PXRD °2θ peaks at 10.89, 11.64, 12.45, 13.38, 14.64 and 15.57;

Form K has PXRD °2θ peaks at 10.98, 11.58, 12.42, 13.35, 15.36 and 15.99;

Form U has PXRD °2θ peaks at 10.88, 12.18, 13.04, 13.52, 15.98 and 16.54; and

amorphous Form Z has a glass transition temperature of 48° C.

3. A form of nalbuphine hydrochloride of claim 1 , selected from the group consisting of Form C, Form D, Form F, Form G, Form H, Form I, Form K and Form U, wherein:

Form C has PXRD peaks at °2θ at 12.37, 14.35, 16.27, 19.5, 21.25 and 24.19;

Form D has PXRD peaks °2θ at 11.35, 11.77, 12.52, 13.15, 14.89, 16.87 and 22.45;

Form F has PXRD peaks °2θ at 12.9, 14.22, 15.75, 19.77, 23.07 and 23.76;

Form G has PXRD peaks °2θ at 8.05, 10.93, 11.32, 12.55, 15.70, 16.21, 17.41, 19.33 and 22.69;

Form H has PXRD peaks °2θ at 11.23, 11.80, 12.52, 14.38, 18.10, 21.40 and 22.49;

Form I has PXRD peaks °2θ at 10.89, 11.64, 12.45, 13.38, 15.57, 17.10, 19.95, 22.29 and 24.18;

Form K has PXRD peaks °2θ at 11.58, 12.42, 15.36, 15.99, 17.13, 19.95 and 23.94; and

Form U has PXRD peaks °2θ at 12.18, 13.04, 13.52, 16.54, 19.04, 21.26, 21.80, 22.08 and 24.16.

4. A form of nalbuphine HCl selected from the group consisting of Form F, Form G and Form U, as in claim 1 , wherein, as measured by Differential Scanning Calorimetry (DSC):

Form F is characterized by an endotherm at about 291° C.;

Form G is characterized by an endotherm at about 293-296° C.; and

Form U is characterized by an endotherm at about 290-293° C.

5. A form of nalbuphine HCl as in claim 1 , which is about 90% to about 100% pure.

6. A form of nalbuphine HCl as in claim 1 , which is about 98% to about 100% pure.

7. A pharmaceutical composition comprising a pharmaceutically acceptable carrier and a form of nalbuphine HCl as in claim 1 .

8. A pharmaceutical composition made by mixing a form of nalbuphine HCl as in claim 1 and a pharmaceutically acceptable carrier.

9. A process for making a pharmaceutical composition comprising mixing a form of nalbuphine HCl as in claim 1 and a pharmaceutically acceptable carrier.

10. A method of providing an analgesic effect, comprising administering to a subject in need thereof, a therapeutically effective amount of a form of nalbuphine HCl as in claim 1 .

11. A form of nalbuphine HCl as in claim 2 , which is about 90% to about 100% pure.

12. A form of nalbuphine HCl as in claim 2 , which is about 98% to about 100% pure.

13. A pharmaceutical composition comprising a pharmaceutically acceptable carrier and a form of nalbuphine HCl as in claim 2 .

14. A pharmaceutical composition made by mixing a form of nalbuphine HCl as in claim 2 and a pharmaceutically acceptable carrier.

15. A process for making a pharmaceutical composition comprising mixing a form of nalbuphine HCl as in claim 2 and a pharmaceutically acceptable carrier.

16. A method of providing an analgesic effect, comprising administering to a subject in need thereof, a therapeutically effective amount of a form of nalbuphine HCl as in claim 2 .

17. A form of nalbuphine HCl as in claim 4 , which is about 90% to about 100% pure.

18. A form of nalbuphine HCl as in claim 4 , which is about 98% to about 100% pure.

19. A pharmaceutical composition comprising a pharmaceutically acceptable carrier and a form of nalbuphine HCl as in claim 4 .

20. A pharmaceutical composition made by mixing a form of nalbuphine HCl as in claim 4 and a pharmaceutically acceptable carrier.

21. A process for making a pharmaceutical composition comprising mixing a form of nalbuphine HCl as in claim 4 and a pharmaceutically acceptable carrier.

22. A method of providing an analgesic effect, comprising administering to a subject in need thereof, a therapeutically effective amount of a form of nalbuphine HCl as in claim 4 .