IP Library Granted Patent US 12,528,805
Granted Patent B2
US 12,528,805 · App. 18/537,371 · Granted Jan 20, 2026

Solid forms of emetine

Inventor: John Klopp (Martinez, CA)
Assignee: Acer Therapeutics Inc.
C07D471/04C07B2200/13
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Quick Facts
Patent No.
US 12,528,805
App. No.
18/537,371
Granted
Jan 20, 2026
Kind
B2
Abstract

Crystalline forms of emetine dihydrochloride (Compound I dihydrochloride) were prepared and characterized in the solid state: Also provided are processes of manufacture and methods of using the crystalline forms of Compound I dihydrochloride.

Claims (35)

1 . A method of treating a viral infection in a subject in need thereof, the method comprising:

administering to the patient a therapeutically effective amount of a crystalline form of Compound I dihydrochloride having the formula:

selected from: Compound I dihydrochloride Form 7B; Compound I dihydrochloride Form 2; Compound I dihydrochloride Form 3; Compound I dihydrochloride Form 4; Compound I dihydrochloride Form 5; Compound I dihydrochloride Form 6; Compound I dihydrochloride Form 7A; and Compound I dihydrochloride Form 8;

wherein the therapeutically effective amount of the crystalline form of Compound I dihydrochloride ranges from 1 to 1000 mg.

2 . The method of claim 1 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is 1 mg to about 500 mg per day.

3 . The method of claim 1 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is 1 mg to about 50 mg per day.

4 . The method of claim 1 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is 100 mg per day.

5 . The method of claim 1 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is 50 mg per day.

6 . The method of claim 1 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is 1 mg per day.

7 . The method of claim 1 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is about 1 mg to about 70 mg per day.

8 . The method of claim 1 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is about 3 mg to about 65 mg per day.

9 . The method of claim 1 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is about 5 mg to about 10 mg per day.

10 . The method of claim 1 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is about 10 mg.

11 . The method of claim 1 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is about 50 mg.

12 . The method of claim 1 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is about 100 mg.

13 . The method of claim 1 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is about 150 mg.

14 . The method of claim 1 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is about 10 mg to about 175 mg.

15 . A method of treating a viral infection in a subject in need thereof, the method comprising:

administering to the patient a therapeutically effective amount of a crystalline form of Compound I dihydrochloride having the formula:

selected from: Compound I dihydrochloride Form 7B; Compound I dihydrochloride Form 2; Compound I dihydrochloride Form 3; Compound I dihydrochloride Form 4; Compound I dihydrochloride Form 5; Compound I dihydrochloride Form 6; Compound I dihydrochloride Form 7A; and Compound I dihydrochloride Form 8;

wherein the patient in need thereof is administered a daily dose ranging from 1 to 1000 mg of the crystalline form of Compound I dihydrochloride; and

wherein one or more additional therapeutic agents is administered to the patient in need thereof.

16 . The method of claim 15 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is 1 mg to about 500 mg per day.

17 . The method of claim 15 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is 1 mg to about 50 mg per day.

18 . The method of claim 15 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is 100 mg per day.

19 . The method of claim 15 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is 50 mg per day.

20 . The method of claim 15 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is 1 mg per day.

21 . The method of claim 15 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is about 1 mg to about 70 mg per day.

22 . The method of claim 15 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is about 3 mg to about 65 mg per day.

23 . The method of claim 15 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is about 5 mg to about 10 mg per day.

24 . The method of claim 15 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is about 10 mg.

25 . The method of claim 15 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is about 50 mg.

26 . The method of claim 15 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is about 100 mg.

27 . The method of claim 15 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is about 150 mg.

28 . The method of claim 15 , wherein the therapeutically effective amount of a crystalline form of Compound I dihydrochloride is about 10 mg to about 175 mg.

Assignments (3)
RELEASE OF SECURITY INTEREST Recorded Mar 13, 2026
From: ALTER DOMUS (US) LLC
To: ACER THERAPEUTICS INC.
Reel/Frame 074071/0515 →
SECURITY INTEREST Recorded Apr 8, 2024
From: ACER THERAPEUTICS INC.
To: ALTER DOMUS (US) LLC
Reel/Frame 067037/0072 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 12, 2023
From: KLOPP, JOHN
To: ACER THERAPEUTICS, INC.
Reel/Frame 065850/0608 →
Continuity (3)
Continuation 17542165 · Dec 3, 2021
Provisional Application 63121743 · Dec 4, 2020
Related Publication 20240228485A1 · Jul 11, 2024
References Cited (12)
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