IR dyes for fluorescence imaging

1. A method for kidney ureter imaging in a subject, the method comprising:

providing a polymorphic compound of sodium 2-((E)-2-((E)-3-(2-((E)-3,3-dimethyl-5-sulfonato-1-(4-sulfonatobutyl)indolin-2-ylidene)ethylidene)-2-(4-sulfonatophenoxy)cyclohex-1-en-1-yl)vinyl)-3,3-dimethyl-1-(4-sulfonatobutyl)-3H-indol-1-ium-5-sulfonate of Formula 1:

wherein the polymorph is a member selected from the group consisting of Form A having an X-ray powder diffraction pattern comprising peaks at 2-theta at 4.30±0.2°, 9.60±0.2° and 12.9°±0.2° and Form B having an X-ray powder diffraction pattern comprising peaks at 2-theta at 5.3°±0.2°, 14.2°±0.2° and 21.2°±0.2°;

admixing said polymorphic compound along with a saccharide stabilizing agent and thereafter dissolving in a pharmaceutically acceptable carrier to make a pharmaceutical composition;

administering the pharmaceutical composition to the subject;

exposing tissue of the subject's renal system to electromagnetic radiation; and

detecting fluorescence radiation from the compound.

2. The method of claim 1 , wherein the polymorphic form is Form A.

3. The method of claim 1 , wherein the polymorphic form is Form B.

4. The method of claim 1 , wherein the saccharide stabilizing agent is a member selected from the group consisting of a monosaccharide, a disaccharide and dextran.

5. The method of claim 4 , wherein the saccharide stabilizing agent is a member selected from the group consisting of glucose, galactose, xylose, glucuronic acid, trehalose, hydroxyethyl starch, mannitol, and 5% dextrose.

6. The method of claim 1 , wherein the pharmaceutical carrier is selected from the group consisting of physiological sterile saline solution, sterile water solution, pyrogen-free water solution, isotonic saline solution, and phosphate buffer solution.

7. The method of claim 1 , wherein the administering is conducted at a diagnostic effective amount of the compound ranging between approximately 30.0 μg/kg and approximately 3000.0 μg/kg.

8. The method of claim 1 , wherein the administering is conducted at a diagnostic effective amount of the compound ranging between approximately 35.0 μg/kg and approximately 600.0 μg/kg.

9. The method of claim 1 , wherein the administering is conducted at a diagnostic effective amount of the compound ranging between approximately 40.0 μg/kg and approximately 420.0 μg/kg.

10. The method of claim 1 , wherein the administering is conducted at a diagnostic effective amount of the compound ranging between approximately 60.0 μg/kg and approximately 120.0 μg/kg.

11. The method of claim 1 , wherein the polymorphic form and saccharide stabilizing agent are provided in a lyophilized form and reconstituted in the pharmaceutical carrier before administering to the subject.

12. The method of claim 1 , wherein the administering is conducted intravenously.

13. The method of claim 1 , further comprising measuring a fluorescence intensity of the administered compound remaining at the tissue of the subject's renal system at a time period after administering.

14. The method of claim 13 , wherein the measured fluorescence intensity of the administered compound is higher in the kidney as compared to a measured fluorescence intensity of the administered compound in one or more of the spleen, intestine, heart, lungs, muscle, or combinations thereof approximately up to six hours after administering.

15. The method of claim 13 , wherein the measured fluorescence intensity of the administered compound is background fluorescence approximately 24 hours after administering.

16. The method of claim 1 , wherein the kidney ureter imaging is performed during a procedure selected from the group consisting of a laparoscopic procedure, a robotic procedure, a robotic laparoscopic procedure, and an open procedure.

17. The method of claim 13 , wherein the measured fluorescence intensity of the administered compound is measured less than 5.0 hrs, 4.75 hrs, 4.50 hrs, 4.25 hrs, 4.00 hrs, 3.75 hrs, 3.50 hrs, 3.25 hrs, 3.00 hrs, 2.75 hrs, 2.50 hrs, 2.25 hrs, 2.00 hrs, 1.75 hrs, 1.50 hrs, 1.25 hrs, 1.00 hrs, 0.90 hrs, 0.80 hrs, 0.70 hrs, 0.60 hrs, 0.50 hrs, 0.40 hrs, 0.30 hrs, 0.20 hrs after administering the compound.