Patent ID: 7994215

Claim:
A yellow-colored fluorescein crystal having a X-ray diffraction spectrum at a wave length of 1.54051 Å characterized by the following peaks: Theta (degrees) Distances (Å) % Intensities Number of counts 3.3500 13.1813 8.55 56 4.0050 11.0283 47.18 309 4.8550 9.1010 12.98 85 5.2650 8.3940 9.01 59 5.4500 8.1099 11.45 75 5.7900 7.6352 52.98 347 6.3000 7.0193 16.95 111 6.7700 6.5340 17.86 117 7.4900 5.9090 17.56 115 8.0300 5.5140 69.77 457 8.4250 5.2572 33.13 217 8.7800 5.0462 8.40 55 9.1550 4.8411 15.88 104 9.3400 4.7461 42.44 278 9.6550 4.5926 34.66 227 9.8800 4.4891 24.43 160 10.1950 4.3518 57.71 378 10.5800 4.1951 58.02 380 10.7350 4.1352 38.17 250 11.1650 3.9779 28.85 189 11.4800 3.8701 30.23 198 11.7200 3.7919 59.85 392 12.1100 3.6716 26.41 173 12.3950 3.5884 58.47 383 12.6400 3.5200 100.00 655 12.9450 3.4384 30.84 202 13.1550 3.3845 56.64 371 13.8350 3.2211 14.66 96 14.0550 3.1717 24.12 158 14.3550 3.1068 36.34 238 14.6700 3.0415 42.90 281 15.1300 2.9511 42.90 281 15.7500 2.8377 18.47 121 15.9400 2.8047 18.17 119 16.2500 2.7526 15.42 101 16.7550 2.6719 17.71 116 16.8500 2.6573 19.39 127 17.2250 2.6011 18.17 119 17.7300 2.5293 15.73 103 18.4200 2.4377 10.23 67 18.5750 2.4180 10.23 67 19.2650 2.3345 15.88 104 19.5800 2.2984 10.84 71 19.8000 2.2739 11.91 78 20.1150 2.2397 13.28 87 20.6500 2.1841 14.81 97 21.1500 2.1348 11.30 74 21.2750 2.1228 10.08 66 21.8100 2.0732 7.94 52 22.2500 2.0342 9.16 60 22.6250 2.0022 9.62 63 22.9100 1.9786 9.01 59.