US 12,404,273 B2
Crystal form of an organic fluorescent compound
Helmut Reichelt, Ludwigshafen am Rhein (DE); Christian Doerr, Ludwigshafen am Rhein (DE); Gerd Rollar, Frankenthal (DE); Hans Reichert, Basel (CH); Oliver Seeger, Ludwigshafen am Rhein (DE); and Korinna Dormann, Ludwigshafen am Rhein (DE)
Assigned to BASF SE, Ludwigshafen am Rhein (DE)
Appl. No. 17/633,989
Filed by BASF SE, Ludwigshafen am Rhein (DE)
PCT Filed Aug. 13, 2020, PCT No. PCT/EP2020/072726
§ 371(c)(1), (2) Date Feb. 9, 2022,
PCT Pub. No. WO2021/037575, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 19193317 (EP), filed on Aug. 23, 2019.
Prior Publication US 2022/0332715 A1, Oct. 20, 2022
Int. Cl. C07D 471/06 (2006.01); B41M 3/14 (2006.01); C09D 11/037 (2014.01); C09D 11/10 (2014.01); C09D 11/50 (2014.01)
CPC C07D 471/06 (2013.01) [B41M 3/144 (2013.01); C09D 11/037 (2013.01); C09D 11/10 (2013.01); C09D 11/50 (2013.01); C07B 2200/13 (2013.01)] 12 Claims
 
1. A crystal form of a compound of formula

OG Complex Work Unit Chemistry
characterized in an X-ray diffraction pattern by diffraction peaks corresponding to two theta scattering angles of 8.0; 12.3; 14.0 and 21.3.