Patent ID: 7795296

Claim:
A crystalline salt of monatin selected from the group consisting of: (a) ammonium salt of (2R,4R)-monatin which has PXRD peaks at diffraction angles 2θ CuKα of 6.1°, 11.6°, 18.1°, 19.6°, and 25.0°; (b) sodium salt of (2R,4R)-monatin which has PXRD peaks at diffraction angles 2θ CuKα of 4.4°, 15.3°, 17.5°, 19.1°, and 24.6°; (c) sodium salt of (2R,4R)-monatin which has PXRD peaks at diffraction angles 2θ CuKα of 4.4°, 15.2°, 17.8°, 20.6°, and 24.1°; (d) potassium salt of (2R,4R)-monatin which has PXRD peaks at diffraction angles 2θ CuKα of 6.1°, 12.2°, 18.3°, 20.6°, and 24.5°; (e) potassium salt of (2R,4R)-monatin which has PXRD peaks at diffraction angles 2θ CuKα of 5.7°, 11.5°, 11.8°, 17.2°, and 23.1°; and (f) potassium salt of (2R,4R)-monatin which has PXRD peaks at diffraction angles 2θ CuKα of 6.6°, 13.9°, 22.9°, and 26.3°.