US 11,859,087 B2
Fluorescent dye, preparation method therefor, and application thereof
Tuanjie Che, Jiangsu (CN)
Assigned to SUZHOU BAIYUAN GENT. CO., LTD., Jiangsu (CN)
Appl. No. 17/056,491
Filed by SUZHOU BAIYUAN GENT CO., LTD., Jiangsu (CN)
PCT Filed Jun. 12, 2018, PCT No. PCT/CN2018/090775
§ 371(c)(1), (2) Date Nov. 18, 2020,
PCT Pub. No. WO2019/227524, PCT Pub. Date Dec. 5, 2019.
Claims priority of application No. 201810535588.9 (CN), filed on May 29, 2018.
Prior Publication US 2021/0206979 A1, Jul. 8, 2021
Int. Cl. C07D 403/00 (2006.01); C09B 55/00 (2006.01); C09K 11/06 (2006.01)
CPC C09B 55/009 (2013.01) [C09K 11/06 (2013.01); C09K 2211/1029 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A fluorescent dye, comprising a structure represented by the formula (I):

OG Complex Work Unit Chemistry
wherein
X is halogen;
R is selected from one of alkyl, cycloalkyl, aryl and heterocyclyl substituted with a hydrophilic group.