Patent ID: 11937501
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Organic fine chemistry (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 9:
10. The heterocyclic compound of claim 8, wherein:
X1 is C(R21), X2 is C(R22), and X3 is N;
X1 is C(R21), X3 is C(R23), and X2 is N;
X2 is C(R22), X3 is C(R23), and X1 is N;
X1 and X2 are each N, and X3 is C(R23);
X1 and X3 are each N, and X2 is C(R22);
X2 and X3 are each N, and X1 is C(R21); or
X1, X2, and X3 are each N;
wherein R21 to R23 are each, independently from one another, have the same meaning as in claim 8.