Salts of an epidermal growth factor receptor kinase inhibitor
The present invention provides a salt form and compositions thereof, which are useful as an inhibitor of EGFR kinases and which exhibits desirable characteristics for the same.
1. A composition comprising Compound 2:
wherein:
n is 1 or 2;
X is hydrobromic acid, benzenesulfonic acid, camphor sulfonic acid, 1,2-ethane disulfonic acid, hydrochloric acid, maleic acid, methanesulfonic acid, naphthalene-2-sulfonic acid, 1,5-naphthalene disulfonic acid, oxalic acid, 4-toluenesulfonic acid or 2,4,6-trihydroxybenzoic acid; and
wherein the composition is substantially free of impurities.
2. The composition of claim 1 , wherein the composition comprises at least about 90% by weight of Compound 2.
3. The composition of claim 2 , wherein the composition comprises at least about 95% by weight of Compound 2.
4. The composition of claim 3 , wherein the composition comprises at least about 97% by weight of Compound 2.
5. The composition of claim 4 , wherein the composition comprises at least about 98% by weight of Compound 2.
6. The composition of claim 5 , wherein the composition comprises at least about 99% by weight of Compound 2.
7. The composition of claim 1 , wherein the composition contains no more than 5.0 area percent HPLC of total organic impurities relative to the total area of an HPLC chromatogram of Compound 2.
8. The composition of claim 7 , wherein the composition contains no more than 3.0 area percent HPLC of total organic impurities relative to the total area of an HPLC chromatogram of Compound 2.
9. The composition of claim 8 , wherein the composition contains no more than 1.5 area percent HPLC of total organic impurities relative to the total area of an HPLC chromatogram of Compound 2.
10. The composition of claim 9 , wherein the composition contains no more than 1.0 area percent HPLC of total organic impurities relative to the total area of an HPLC chromatogram of Compound 2.
11. The composition of claim 1 , wherein X is hydrobromic acid.
12. A composition comprising Compound 2:
wherein:
n is 1 or 2;
X is hydrobromic acid, benzenesulfonic acid, camphor sulfonic acid, 1,2-ethane disulfonic acid, hydrochloric acid, maleic acid, methanesulfonic acid, naphthalene-2-sulfonic acid, 1,5-naphthalene disulfonic acid, oxalic acid, 4-toluenesulfonic acid or 2,4,6-trihydroxybenzoic acid; and
wherein Compound 2 is a crystalline solid substantially free of an amorphous form of Compound 2.
13. The composition of claim 12 , wherein Compound 2 is at least 90% crystalline.
14. The composition of claim 13 , wherein Compound 2 is at least 95% crystalline.
15. The composition of claim 14 , wherein Compound 2 is at least 97% crystalline.
16. The composition of claim 15 , wherein Compound 2 is at least 98% crystalline.
17. The composition of claim 16 , wherein Compound 2 is at least 99% crystalline.
18. The composition of claim 12 , wherein X is hydrobromic acid.
19. A composition comprising Compound 2:
wherein:
n is 1 or 2;
X is hydrobromic acid, benzenesulfonic acid, camphor sulfonic acid, 1,2-ethane disulfonic acid, hydrochloric acid, maleic acid, methanesulfonic acid, naphthalene-2-sulfonic acid, 1,5-naphthalene disulfonic acid, oxalic acid, 4-toluenesulfonic acid or 2,4,6-trihydroxybenzoic acid; and
a pharmaceutically acceptable carrier, adjuvant, or vehicle.
20. The composition of claim 19 , wherein X is hydrobromic acid.