Strontium (M) ascorbate, compositions containing same, method for making same and method of using same

1. A compound of formula (1):

(ascorbate) 2 Sr:(M +a ) x (ascorbate) y

wherein ascorbate refers to the ascorbate anion:

wherein y is a positive integer, wherein x is a positive integer, wherein a is a positive integer reflecting the valence of M;

wherein (y)=((x) multiplied by (+a)) such that a total positive charge ((x) multiplied by (+a)) equals a total negative charge (y) provided that the ascorbate anion has a negative valence of (−1);

wherein M is an alkali metal, an alkali earth metal or Mn, Cu, Zn, Fe or a combination thereof; and

wherein the ratio of the moles of Sr to the moles of M is selected from 1.0, 1.1, 1.2, 1.25, 1.3, 1.4, 1.5, 1.6, 1.7, 1.75, 1.8, 1.9, 2, 2.25, 2.5, 2.75, 3, and 4.

2. The compound of claim 1 , wherein M is selected from the group consisting of Na, K, Mg, Ca, Mn, Cu, Zn, Fe and combinations thereof, wherein y is 1, 2, 3, 4, 5, or 6, wherein a is 1, 2, 3, 4, 5, or 6, and wherein x is 1, 2, 3, 4, 5, or 6.

3. The compound of claim 1 of formula (2):

(ascorbate) 2 Sr:Ca(ascorbate) 2

wherein Sr refers to strontium and Ca refers to calcium.

4. The compound of claim 3 , wherein the ratio of the moles of Sr to the moles of Ca is selected from 1.0, 1.1, 1.2, 1.25, 1.3, 1.4, 1.5, 1.6, 1.7, 1.75, 1.8, 1.9, 2, 2.25, 2.5, 2.75, 3, and 4.

5. A composition comprising the compound of formula (1) of claim 1 and a pharmaceutically acceptable excipient.

6. The composition of claim 5 in an oral dosage form selected from the group consisting of a tablet, a capsule, a softgel capsule, a liquid, a syrup, a suspension, a sublingual tablet, a powder, and a lozenge.

7. The composition of claim 6 wherein the oral dosage form is an immediate release dosage form or an extended release dosage form.

8. A composition comprising the compound of formula (2) of claim 3 and a pharmaceutically acceptable excipient.

9. The composition of claim 8 in an oral dosage form selected from the group consisting of a tablet, a capsule, a softgel capsule, a liquid, a syrup, a suspension, a sublingual tablet, a powder, and a lozenge.

10. The composition of claim 9 wherein the oral dosage form is an immediate release dosage form or an extended release dosage form.

11. A method of providing ascorbic acid comprising administering the composition of claim 5 to a subject.

12. The method of claim 11 wherein the subject is in need of the composition of claim 6 and the subject is a human.

13. A method of providing ascorbic acid comprising administering the composition of claim 8 to a subject.

14. The method of claim 13 wherein the subject is in need of the composition of claim 6 and the subject is a human.

15. A method of making the compound of formula (1) of claim 1 comprising:

(a) dissolving at least a stoichiometric amount of ascorbic acid in water at a first solution temperature sufficient to dissolve the ascorbic acid in a solution;

(b) adding at least a stoichiometric amount of strontium carbonate (SrCO 3 ) to the solution of ascorbic acid;

(c) adding at least a stoichiometric amount of M carbonate (M +a ) x1 (CO 3 ) y1 to the solution having a second solution temperature, where (+a)×(x1)=(−2)×(y1), where x1 is an integer and y1 is an integer;

(d) adjusting the second solution temperature within a range from about 40° C. to about 80° C. for a time sufficient to form the compound of formula (1); and

(e) optionally, drying the slurry at a drying temperature and for a drying time sufficient to yield at least the compound of formula (1) in solid or semi-solid form.

16. The method of claim 15 wherein the water is distilled water or deionized water.

17. The method of claim 15 wherein the first solution temperature is about 90° C. and the solution is held within a Mueller reaction vessel.

18. The method of claim 15 wherein step (b) comprises incrementally adding the strontium carbonate (SrCO 3 ) to the solution of ascorbic acid.

19. The compound of claim 1 in a solid form selected from the group consisting of a powder form, a granular form or a cake form.