Organic Compound, Light-Emitting Device, Light-Emitting Apparatus, Electronic Device, Display Device, and Lighting Device

    公开(公告)号:US20210139445A1

    公开(公告)日:2021-05-13

    申请号:US17052937

    申请日:2019-04-30

    IPC分类号: C07D307/79 H01L51/00

    摘要: A novel organic compound is provided. Alternatively, an organic compound that exhibits light emission with favorable chromaticity is provided. Alternatively, an organic compound that exhibits blue light emission with favorable chromaticity is provided. Alternatively, a light-emitting device with favorable emission efficiency is provided. Alternatively, an organic compound having a high carrier-transport property is provided. Alternatively, an organic compound with favorable reliability is provided. An organic compound having at least one amino group in which any one of a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted carbazolyl group is bonded to any one of a substituted or unsubstituted naphthobisbenzofuran skeleton, a substituted or unsubstituted naphthobisbenzothiophene skeleton, and a substituted or unsubstituted naphthobenzothienobenzofuran skeleton is provided.

    Crystal form of tasimelteon
    17.
    发明授权

    公开(公告)号:US10654820B2

    公开(公告)日:2020-05-19

    申请号:US16300303

    申请日:2017-02-19

    摘要: Crystal forms I and II of tasimelteon. Crystal form I: an X-ray powder diffraction spectrum using CuKα radiation and represented by a 2θ angle has diffraction peaks at least at 7.2°±0.2°, 7.9°±0.2°, 10.6°±0.2°, 14.4°±0.2°, 15.9°±0.2°, 17.3°±0.2°, 21.0°±0.2°, 23.2°±0.2°, and 24.4°±0.2°. Crystal form II: an X-ray powder diffraction spectrum using CuKα radiation and represented by a 2θ angle has diffraction peaks at least at 6.8°±0.2°, 12.1°±0.2°, 12.5°±0.2°, 13.1°±0.2°, 13.6°±0.2°, 13.8°±0.2°, 15.8°±0.2°, 17.0°±0.2°, 18.4°±0.2°, 20.8°±0.2°, 24.2°±0.2°, and 24.4°±0.2°. Crystal forms I and II of tasimelteon have advantages of excellent physicochemical property, good stability and solubility, and simple operation for preparation.