IP Library Granted Patent US 12,421,249
Granted Patent B2
US 12,421,249 · App. 18/504,559 · Granted Sep 23, 2025

Inhibitors of APOL1 and methods of using same

Inventors: Jun Myun Ahn (Waltham, MA); Samantha Angle (Cambridge, MA); Michael Aaron Brodney (Newton, MA); Jingrong Cao (Newton, MA); John E. Cochran (Marshfield, MA); Jon H. Come (Cambridge, MA); Leslie A. Dakin (Framingham, MA); Elena Dolgikh (Boston, MA); Brad D. Maxwell (Holliston, MA); Suganthini S. Nanthakumar (Newton, MA); Hardwin O′Dowd (Cambridge, MA); Jessica Howard Olsen (Jamaica Plain, MA); Timothy J. Senter (Arlington, MA); Akira Joseph Shimizu (Framingham, MA); Steven David Stone (Quincy, MA); Haoxuan Wang (Somerville, MA)
Assignee: Vertex Pharmaceuticals Incorporated
C07D495/20C07D519/00
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,421,249
App. No.
18/504,559
Granted
Sep 23, 2025
Kind
B2
Abstract

The disclosure provides at least one entity chosen from compounds of Formula I, a tautomer thereof, a deuterated derivative of that compound or tautomer, and a pharmaceutically acceptable salt of any of the foregoing, compositions comprising the same, and methods of using the same, including uses in treating APOL1-mediated diseases, including pancreatic cancer, focal segmental glomerulosclerosis (FSGS), and/or non-diabetic kidney disease (NDKD).

Claims (57)

1. A compound represented by:

a tautomer thereof, a deuterated derivative of that compound or tautomer, or a pharmaceutically acceptable salt of any of the foregoing, wherein:

R 1 is selected from hydrogen, halogen, cyano, —OH, C 1 -C 6 alkyl, C 1 -C 6 alkoxy, C 3 -C 6 cycloalkyl, and phenyl, wherein:

the C 1 -C 6 alkyl of R 1 is optionally substituted with 1 to 3 groups independently selected from halogen, cyano, —OH, —NH 2 , —NH(C 1 -C 4 alkyl), —N(C 1 -C 4 alkyl) 2 , and C 1 -C 4 alkoxy;

the C 1 -C 6 alkoxy of R 1 is optionally substituted with 1 to 3 groups independently selected from halogen;

the C 3 -C 6 cycloalkyl of R 1 is optionally substituted with 1 to 3 groups independently selected from halogen, cyano, —OH, —NH 2 , —NH(C 1 -C 4 alkyl), —N(C 1 -C 4 alkyl) 2 , C 1 -C 4 alkyl, C 1 -C 4 alkoxy, —C(═O)NH 2 , —C(═O)NH(C 1 -C 4 alkyl), and —C(═O)N(C 1 -C 4 alkyl) 2 ; and

the phenyl of R 1 is optionally substituted with 1 to 3 groups independently selected from halogen, cyano, —OH, —NH 2 , —NH(C 1 -C 4 alkyl), —N(C 1 -C 4 alkyl) 2 , C 1 -C 4 alkyl, C 1 -C 4 alkoxy, —C(═O)NH 2 , —C(═O)NH(C 1 -C 4 alkyl), and —C(═O)N(C 1 -C 4 alkyl) 2 ;

R 2a is selected from hydrogen, halogen, cyano, —OH, ═O, and C 1 -C 6 alkyl, wherein:

the C 1 -C 6 alkyl of R 2a is optionally substituted with 1 to 3 groups independently selected from halogen, cyano, —OH, and C 1 -C 4 alkoxy;

R 2b is selected from hydrogen, halogen, cyano, —OH, ═O, and C 1 -C 6 alkyl;

R 3a is selected from halogen, cyano, —OH, C 1 -C 6 alkyl, and ═O; wherein:

the C 1 -C 6 alkyl of R 3a is optionally substituted with 1 to 3 groups independently selected from halogen, cyano, and —OH;

R 4 is selected from C 1 -C 6 alkyl, —C(═O)O(C 1 -C 4 alkyl), C 2 -C 6 alkynyl, and wherein:

the C 1 -C 6 alkyl of R 4 is optionally substituted with 1 to 3 groups independently selected from halogen, cyano, —OH, —NH 2 , —NH(C 1 -C 4 alkyl), —N(C 1 -C 4 alkyl) 2 , C 1 -C 4 alkoxy, —C(═O)NH 2 , —C(═O)NH(C 1 -C 4 alkyl), —C(═O)N(C 1 -C 4 alkyl) 2 , C 3 -C 6 cycloalkyl, 5 to 10-membered heterocyclyl, phenyl, and 5 to 10-membered heteroaryl;

Ring A is selected from C 3 -C 12 carbocyclyl, 3 to 12-membered heterocyclyl, C 6 and C 10 aryl, and 5 to 10-membered heteroaryl, wherein Ring A is optionally substituted with 1, 2, 3, 4, or 5 R a groups; wherein:

R a , for each occurrence, is independently selected from halogen, cyano, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 1 -C 6 alkoxy, C 1 -C 6 haloalkyl, C 1 -C 6 haloalkenyl, C 1 -C 6 haloalkoxy, —C(═O)NR h R i , —NR h R i , —NR h C(═O)R k , —NR h C(═O)OR k , —NR h C(═O)NR i R j , —NR h S(═O) p R k , —OR k , —OC(═O)R k , —OC(═O)OR k , —OC(═O)NR h R i , —[O(CH 2 ) q ] r O(C 1 -C 6 alkyl), —S(═O) p R k , —S(═O) p NR h R i , —C(═O)OR k , C 3 -C 12 carbocyclyl, 3- to 12-membered heterocyclyl, C 6 and C 10 aryl, and 5- to 10-membered heteroaryl; wherein:

the C 1 -C 6 alkyl, C 1 -C 6 alkoxy, and the C 2 -C 6 alkenyl of R a are each optionally substituted with 1 to 3 groups independently selected from C 6 to C 10 aryl (optionally substituted with 1 to 3 R m groups), 5- to 10-membered heterocyclyl (optionally substituted with 1 to 3 R m groups), 5- to 10-membered heteroaryl (optionally substituted with 1 to 3 R m groups), cyano, —C(═O)R k , —C(═O)OR k , —C(═O)NR h R i , —NR h R i , —NR h C(═O)R k , —NR h C(═O)OR k , —NR h C(═O)NR i R j , —NR h S(═O) p R k , —OR k , —OC(═O)R k , —OC(═O)OR k , —OC(═O)NR h R i , —S(═O) p R k , —S(═O) p NR h R i , and C 3 -C 6 carbocyclyl (optionally substituted with 1 to 3 R m groups);

the C 3 -C 12 carbocyclyl, the 3 to 12-membered heterocyclyl, the C 6 and C 10 aryl, and the 5 to 10-membered heteroaryl of R a are each optionally substituted with 1 to 3 groups independently selected from halogen, cyano, C 1 -C 4 alkyl, —NR h R i , and —OR k ; wherein:

R h , R i , and R j , for each occurrence, are each independently selected from hydrogen, C 1 -C 4 alkyl, C 6 -C 10 aryl, and C 3 -C 6 cycloalkyl; wherein:

the C 1 -C 4 alkyl of any one of R h , R i , and R j is optionally substituted with 1 to 3 groups independently selected from halogen, cyano, and —OH;

R k , for each occurrence, are each independently selected from hydrogen, C 1 -C 4 alkyl, 5- to 10-membered heterocyclyl, and C 3 -C 6 carbocyclyl; wherein:

the C 1 -C 4 alkyl of any one of R k is optionally substituted with 1 to 3 groups independently selected from halogen, cyano, and —OH;

R m , for each occurrence, is independently selected from halogen, cyano, oxo, C 1 -C 6 alkyl, C 1 -C 6 alkoxy, —S(═O) p R k , and —OR k ; wherein:

the C 1 -C 6 alkyl of R m is optionally substituted with 1 to 3 groups independently selected from halogen, cyano, and —OH;

R 5 is selected from C 1 -C 6 alkyl, —C(═O)O(C 1 -C 4 alkyl), C 3 -C 12 carbocyclyl, 3- to 12-membered heterocyclyl, C 6 and C 10 aryl, and 5- to 10-membered heteroaryl; wherein:

the C 1 -C 6 alkyl of R 5 is optionally substituted with 1 to 3 groups independently selected from halogen, cyano, —OH, —NH 2 , —NH(C 1 -C 4 alkyl), —N(C 1 -C 4 alkyl) 2 , C 1 -C 4 alkoxy, —C(═O)NH 2 , —C(═O)NH(C 1 -C 4 alkyl), and —C(═O)N(C 1 -C 4 alkyl) 2 ;

the C 3 -C 12 carbocyclyl, the 3 to 12-membered heterocyclyl, the C 6 and C 10 aryl, and the 5 to 10-membered heteroaryl of R 5 are each optionally substituted with 1 to 3 groups independently selected from halogen, cyano, —OH, —NH 2 , —NH(C 1 -C 4 alkyl) (optionally substituted with —OH), —N(C 1 -C 4 alkyl) 2 , C 1 -C 5 alkyl (optionally substituted with —OH), C 1 -C 4 alkoxy, —C(═O)NH 2 , —C(═O)NH(C 1 -C 4 alkyl), —NHC(═O) (C 1 -C 4 alkyl), —C(═O) (C 1 -C 4 alkoxy), and —C(═O)N(C 1 -C 4 alkyl) 2 ;

p is an integer selected from 1 and 2; and

q and r are each an integer selected from 1, 2, 3, and 4.

2. The compound, tautomer, deuterated derivative, or pharmaceutically acceptable salt according to claim 1 , wherein Ring A is selected from

each of which is optionally substituted with 1, 2, 3, 4, or 5 R a groups.

3. The compound, tautomer, deuterated derivative, or pharmaceutically acceptable salt according to claim 1 , wherein R 4 is selected from —CH 3 and Ring A; wherein Ring A is selected from

each of which is optionally substituted with 1, 2, 3, 4, or 5 R a groups.

4. The compound, tautomer, deuterated derivative, or pharmaceutically acceptable salt according to claim 1 , wherein Ring A is selected from

which is optionally substituted with 1 or 2 R a groups.

5. The compound, tautomer, deuterated derivative, or pharmaceutically acceptable salt according to claim 1 , wherein R a , for each occurrence, is independently selected from F, cyano, —OH, —CH 3 , —CF 3 , —CH(CH 3 ) 2 , —(CH 2 ) 2 OH, —(CH 2 ) 2 OCH 3 , —CH 2 CH(OH)C 2 H 5 , —CH 2 C(CH 3 )(CH 2 OH) 2 , —OCH 3 , —OCH 2 CH 3 , [O(CH 2 ) 2 ] 2 OCH 3 , —CH 2 C(═O)NHCH 3 , —(CH 2 ) 2 SO 2 CH 3 , —CH 2 C(═O)N(CH 3 ) 2 , —CH 2 (cyclopropyl), —C(═O)NH 2 , —C(═O)NH(cyclopropyl), —NH 2 , —NHCH 3 , —N(CH 3 ) 2 , —NHC(CH 3 ) 2 CH 2 OH, —NHC(═O)CH 3 , —SO 2 CH 3 , —SO 2 NH 2 , cyclopropyl, 2-methoxyphenyl, N-methylpiperazinyl, tetrahydro-2H-pyranyl, methylpyrazolyl, pyridinyl, and tetrahydrothiophenyl 1,1-dioxide.

6. The compound, tautomer, deuterated derivative, or pharmaceutically acceptable salt according to claim 1 , wherein R a , for each occurrence, is C 1 -C 6 alkyl.

7. The compound, tautomer, deuterated derivative, or pharmaceutically acceptable salt according to claim 1 , wherein R 1 is selected from Cl, Br, —CH 3 , —CF 3 , —CH 2 CH 3 , —CH(CH 3 ) 2 , —CH 2 CHF 2 , —CH 2 CH(CH 3 ) 2 , difluorocyclobutyl, and cyclohexyl.

8. The compound, tautomer, deuterated derivative, or pharmaceutically acceptable salt according to claim 1 , wherein R 1 is Cl or CF 3 .

9. The compound, tautomer, deuterated derivative, or pharmaceutically acceptable salt according to claim 1 , wherein R 3a is selected from F, —OH, —CH 3 , —CHF 2 , and CH 2 OH.

10. The compound, tautomer, deuterated derivative, or pharmaceutically acceptable salt according to claim 1 , wherein R 3a is —OH.

11. The compound, tautomer, deuterated derivative, or pharmaceutically acceptable salt according to claim 1 , wherein R 5 is selected from —CH 3 , —CH 2 CH 3 , —CH 2 OH, —C(═O)OCH 3 , —CH 2 OCH 3 , —CH(CH 3 ) 2 , cyclopropyl, difluorocyclopropyl, and tetrahydro-2H-pyranyl.

12. The compound, tautomer, deuterated derivative, or pharmaceutically acceptable salt according to claim 1 , wherein the compound is selected from:

tautomers thereof, deuterated derivatives of those compounds and tautomers, and pharmaceutically acceptable salts of any of the foregoing.

13. A compound selected from Compound 174:

and a pharmaceutically acceptable salt thereof.

14. A compound selected from Compound 181:

and a pharmaceutically acceptable salt thereof.

15. A pharmaceutical composition comprising the compound, tautomer, deuterated derivative, or pharmaceutically acceptable salt according to claim 1 and a pharmaceutically acceptable carrier.

16. A method of treating focal segmental glomerulosclerosis and/or non-diabetic kidney disease comprising administering to a patient in need thereof the compound, tautomer, deuterated derivative, or pharmaceutically acceptable salt according to claim 1 .

17. A method of treating an APOL1-mediated disease comprising administering to a patient in need thereof the compound, tautomer, deuterated derivative, or pharmaceutically acceptable salt according to claim 1 .

18. The method according to claim 17 , wherein the APOL1-mediated disease is cancer.

19. The method according to claim 17 , wherein the APOL1-mediated disease is pancreatic cancer.

20. The method according to claim 17 , wherein the APOL1-mediated disease is an APOL1-mediated kidney disease.

21. A compound that is Compound 174:

22. A compound that is Compound 181:

23. A compound selected from:

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 3, 2025
From: DAKIN, LESLIE A.; SENTER, TIMOTHY J.; MAXWELL, BRAD D.; STONE, STEVEN DAVID; WANG, HAOXUAN; OLSEN, JESSICA HOWARD; ANGLE, SAMATHA; SHIMIZU, AKIRA JOSEPH; COCHRAN, JOHN E.; O'DOWD, HARDWIN; BRODNEY, MICHAEL AARON; COME, JON H.; CAO, JINGRONG (JEAN); NANTHAKUMAR, SUGANTHINI S.; DOLGIKH, ELENA
To: VERTEX PHARMACEUTICALS INCORPORATED
Reel/Frame 071300/0004 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 2, 2025
From: AHN, JUN MYUN
To: VERTEX PHARMACEUTICALS INCORPORATED
Reel/Frame 071287/0746 →
Continuity (3)
Continuation 17446135 · Aug 26, 2021
Provisional Application 63070705 · Aug 26, 2020
Related Publication 20240368180A1 · Nov 7, 2024
References Cited (79)
US 11618746B2 · Cao et al. · 2023 [cited by applicant]
US 11801234B2 · Mallalieu et al. · 2023 [cited by applicant]
US 11807635B2 · Li et al. · 2023 [cited by applicant]
US 11866446B2 · Ahn · 2024 [cited by examiner]
US 20030124028A1 · Carlson et al. · 2003 [cited by applicant]
US 20080153861A1 · Bissantz et al. · 2008 [cited by applicant]
US 20100317661A1 · Wang et al. · 2010 [cited by applicant]
US 20210246121A1 · Lai et al. · 2021 [cited by applicant]
US 20220340523A1 · Dakin et al. · 2022 [cited by applicant]
US 20230011118A1 · Dakin et al. · 2023 [cited by applicant]
US 20230014907A1 · Dakin et al. · 2023 [cited by applicant]
US 20230119114A1 · Daniel et al. · 2023 [cited by applicant]
US 20230201201A1 · Skorecki et al. · 2023 [cited by applicant]
US 20230203000A1 · Dakin et al. · 2023 [cited by applicant]
US 20230250087A1 · Gagnon et al. · 2023 [cited by applicant]
US 20240059681A1 · Li et al. · 2024 [cited by applicant]
US 20240277661A1 · Mallalieu et al. · 2024 [cited by applicant]
US 20240368180A1 · Ahn et al. · 2024 [cited by applicant]
US 20250084094A1 · Senter et al. · 2025 [cited by applicant]
WO WO2005021505A1 · 2005 [cited by applicant]
WO WO2008155132A1 · 2008 [cited by applicant]
WO WO2011060035A1 · 2010 [cited by applicant]
WO WO2011060217A1 · 2010 [cited by applicant]
WO WO2016078770A1 · 2016 [cited by applicant]
WO WO2017137334A1 · 2017 [cited by applicant]
WO WO2020131807A1 · 2020 [cited by applicant]
WO WO2020186220A1 · 2020 [cited by applicant]
WO WO2021216665A1 · 2021 [cited by applicant]
WO WO2021092115A1 · 2021 [cited by applicant]
WO WO2021127337A1 · 2021 [cited by applicant]
WO WO2021154997A1 · 2021 [cited by applicant]
WO WO2021158666A1 · 2021 [cited by applicant]
WO WO2021178768A1 · 2021 [cited by applicant]
WO WO2021224927A1 · 2021 [cited by applicant]
WO WO2021220178A1 · 2021 [cited by applicant]
WO WO2021252849A1 · 2021 [cited by applicant]
WO WO2021252859A1 · 2021 [cited by applicant]
WO WO2021252863A1 · 2021 [cited by applicant]
WO WO2022047031A1 · 2022 [cited by applicant]
WO WO2023028237A1 · 2023 [cited by applicant]
WO WO2023101981A1 · 2023 [cited by applicant]
WO WO2023154309A1 · 2023 [cited by applicant]
WO WO2023154310A1 · 2023 [cited by applicant]
WO WO2023154314A1 · 2023 [cited by applicant]
WO WO2023154344A1 · 2023 [cited by applicant]
Brittain H. G. et al., (2001) “X-Ray Diffraction III: Pharmaceutical Applications of X-ray Powder Diffraction,” Spectroscopy, 16(7), pp. 14-18. [cited by applicant]
Database Registry (2011), Aurora Fine Chemicals: “Spiro[isobenzofuran-1(3H),4′-piperidine]-3-carboxamide, N,N-dimethyl-1′-[(5-methyl-2-furanyl)methyl]-2,2,2-trifluoroacetate (1:1)”, XP093038422, retrieved from STN Datab… [cited by applicant]
Database Registry (2018), Aurora Fine Chemica1s: “Spiro[isobenzofuran-1(3H),4′-piperidine]-3-carboxamide,N,N-climethy1-1′-(3-thieny1methy1)-”, XP093038444, retrieved from STN Database accession No. 2184532-71-4 abstract. [cited by applicant]
Database Registry (2018), Aurora Fine Chemicals: “Spiro[isobenzofuran-1(3H),4′-piperidine]-3-carboxamide,N,N-climethy1-1′-[(1-methy1-1H-imidazo1-2-yl) methyl]-”, XP093038484, retrieved from Database accession No. 218264… [cited by applicant]
Database Registry (2018), Aurora Fine Chemicals: “Spiro[isobenzofuran-1(3H),4′-piperidine]-3-carboxamide,N,N-dimethyl-1′-(2-thiazolylmethyl)-”, XP093038443, retrieved from STN Database accession No. 2185335-69-5 abstrac… [cited by applicant]
Database Registry (2018), Aurora Fine Chemicals: “Spiro[isobenzofuran-1(3H), 4′-piperidine]-3-carboxamide,N,N-dimethyl-1′-[(5-methyl-2-furanyl)methy1)-, 2,2,2-trifluoroacetate (1:1)”, XP093038441, retrieved from STN Dat… [cited by applicant]
Database Registry (2021), “2′-Cyclopropyl-6,7-dihydro-6,6′-dimethyls piro[I,7-naphthyridine-8(5H),4′-piperidine],” XP093024335, retrieved from STN Database accession No. 2644543-73-5 abstract. [cited by applicant]
Database Registry (2021), “2′-Cyclopropyl-7,8-dihydro-6′-methylspiro [I,6-naphthyridine-5(6H),4′-piperidine],” XP093024331, retrieved from STN Database accession No. 2645191-67-7 abstract. [cited by applicant]
Database Registry (2021), Anonymous: “2′-Cyclopropyl-3,4-dihydro-3,6′-dimethyls piro[2,6-naphthyridine-1(2H), 4′piperidine],” XP093024352, retrieved from STN Database accession No. 2620609-98-3 abstract. [cited by applicant]
Database Registry (2021), Anonymous: “2′-Cyclopropyl-3,4-dihydro-6′-methylspiro [isoquinoline-1(2H), 4′-piperidin]-7-ol,” XP093024340, retrieved from STN Database accession No. 2631256-91-0 abstract. [cited by applicant]
Database Registry (2021), Anonymous: “2′-Cyclopropyl-6,7-dihydro-6′-methylspiro [I,7-naphthyridine-8(5H),4′ piperidine]-5-methanol,” XP093024350, retrieved from STN Database accession No. 2617381-98-1 abstract. [cited by applicant]
Database Registry (2021), Anonymous: “2′-Cyclopropyl-6,7-dihydro-6′-methylspiro [I,7-naphthyridine-8(5H), 4′ piperidine]-6-methanol,” XP093024346, retrieved from STN Database accession No. 2626788-69-8 abstract. [cited by applicant]
Database Registry (2021), Anonymous: “2-Cyclopropyl-7′,8′-dihydro-2′,6-dimethyl spiro[piperidine-4,5′ (3′H)-pyrido[4,3-d]py rimidin]-4′ (6′H)-one”, XP093024343, retrieved from STN Database accession No. 2631119-41-8 abs… [cited by applicant]
Database Registry (2021), Anonymous: “Name not yet assigned”, XP093024338, retrieved from STN Database accession No. 2642534-36-7 abstract. [cited by applicant]
Database Registry (2021), Anonymous: “Name not yet assigned”, XP093024344, retrieved from STN Database accession No. 2630494-88-9 abstract. [cited by applicant]
Database Registry (2021), Anonymous: “rel-(2′R,6′R)-3,4-Dihydro-7-methoxy-2′,6′-dimethylspiro[2,6-naphthyridine1(2H),4′-p iperidine],” XP093024348, retrieved from STN Database accession No. 2625380-27-8 abstract. [cited by applicant]
Dummer, P.D. et al. (2015), “APOL1 kidney disease risk variants—an evolving landscape,” Semin Nephrol. 35(3):222-236. HHS Public Access Author Manuscript; available in PMC May 1, 2016 (25 pages). [cited by applicant]
International Search Report and Written Opinion for International Application No. PCT/US2021/047754, mailed Oct. 25, 2021 (13 pages). [cited by applicant]
Kagabu, S. et al. (2009), “N-Thiophenylethyl-2,2-dichloro-1-cyclopropanecarboxamides: modification of the amide part of carpropamid and examination of fungicidal activity,” J. Pestic. Sci. 34(3) 161-172. [cited by applicant]
Lennox, A. (2018) “Electrochemical Aminoxyl-Mediated-Cyanation of Secondary Piperidines for Pharmaceutical Building Block Diversification” J. Am. Chem. Soc. 140, 11227-11231. [cited by applicant]
Lin, J. et al. (2021), “Oncogene APOL1 promotes proliferation and inhibits apoptosis via activating NOTCH1 signaling pathway in pancreatic cancer,” [cited by applicant]
Nitta, A. et al. (2012) “Pyrrolidinyl phenylurea derivatives as novel CCR3 antagonists,” Bioorg. Med. Chem. Lett. 22(2012), 6876-6881. [cited by applicant]
Pedregal, A. et al. (2012) “Development of LC-MS/MS-Based Receptor Occupancy Tracers and Positron Emission Tomography Radioligands for the Nociceptin/Orphanin FQ (NOP) Receptor,” J. Med. Chem. 55, 4955-4967. [cited by applicant]
Takai, K. et al., (2014) “Discovery of N-substituted 7-azaindoline derivatives as potent, orally available M1 and M4 muscarinic acetylcholine receptors selective agonist,” Bioorg. Med. Chem. Lett. 24(2014), 3189-3193. [cited by applicant]
The United States Pharmacopeia, Jan. 1, 1995, 23rd Revision, USP 23/NF 18, General Chapter on X-ray diffraction, pp. 1843-1844. [cited by applicant]
Vajgel, G. et al. (2020), “A single APOL1 nephropathy variant increases risk of advanced lupus nephritis in Brazilians,” [cited by applicant]
[cited by applicant]
Wünsch, B. et al. (1992), “Synthese und ZNS-Aktivität spirocyclischer Pethidin- und Prodin-Analoga,” [cited by applicant]
Andres J., “Polymorphs in Pharmaceutical Products” USPTO, Dec. 9, 2009, https://www.njipla.org/event-831656. [cited by applicant]
Gardner, C.R. et al. (2004), “Application of high throughput technologies to drug substance and drug product development,” Computers and Chemical Engineering 28(2004), 943-953. [cited by applicant]
Strachan, C.J. et al., (2007) “Raman spectroscopy for quantitative analysis of pharmaceutical solids,” Journal of Pharmacy and Pharmacology, 59(2), 179-192. [cited by applicant]
U.S. Appl. No. 18/836,539, filed Aug. 7, 2024, by Angle et. al. [cited by applicant]
U.S. Appl. No. 18/836,407, filed Aug. 7, 2024, by Senter et. al. [cited by applicant]
U.S. Appl. No. 18/836,681, filed Aug. 7, 2024, by Senter et. al. [cited by applicant]