Patent ID: 11970515
Assignee: CHENGDU NEWSUN CROP SCIENCE CO., LTD.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  A | IPC A  C

Claim 0:
1. A crystal form of a brassinosteroid (BR) analogue, wherein the BR analogue has a chemical formula of C27H46O7, a chemical name of (20R,22R)-2β,3β,14α-14,20,22,25-hexahydroxy-5β,8α,9α-cholestan-6-one, and a structural formula of:, the crystal form is selected from the group consisting of a crystal form I and a crystal form II; an X-ray powder diffraction (XRPD) spectrogram represented by Cu-Kα radiation and a 2θ±0.2° diffraction angle of the crystal form I shows characteristic diffraction peaks at 6.25°, 8.75°, 9.53°, 12.46°, 13.93°, 16.26°, 17.21°, 17.73°, 18.69°, 19.81°, 20.68°, 22.75°, 24.13°, 24.99°, 25.77°, 27.070, 29.660, 30.780, 31.820, 33.110, 36.140, 37.690, 38.900, 40.370, 42.530, and 48.760; and an XRPD spectrogram represented by the Cu-Kα radiation and the 2θ±0.2° diffraction angle of the crystal form II shows characteristic diffraction peaks at 6.59°, 10.74°, 11.94°, 14.62°, 15.31°, 17.56°, 18.42°, 18.80°, 19.75°, 20.76°, 21.88°, 22.57°, 23.87°, 24.81°, 26.45°, 28.09°, 28.71°, 29.65°, 31.39°, 33.46°, 34.40°, 36.83°, 38.11°, 38.72°, 39.76°, 41.66°, 43.05°, 46.42°, 47.02°, and 47.450;
an infrared spectrum of the crystal form I shows characteristic peaks at wave numbers of 3,425.78 cm−1, 2,961.01 cm−1, 2,926.81 cm−1, 1,696.67 cm−1, 1,633.37 cm−1, and 1,064.12 cm−1; and
an infrared spectrum of the crystal form II shows characteristic peaks at wave numbers of 3,431.58 cm−1, 2,966.56 cm−1, 1,708.24 cm−1, 1,634.57 cm−1, 1,383.93 cm−1, and 1,068.20 cm−1.