US 12,448,347 B2
Polymorphic forms of (R)-oxybutynin hydrochloride
Dennis Molnar, Hopkinton, NH (US); and Sean Johnston, Doylestown, PA (US)
Assigned to APNIMED, INC. (DELAWARE), Cambridge, MA (US)
Appl. No. 17/923,284
Filed by APNIMED, INC. (DELAWARE), Cambridge, MA (US)
PCT Filed May 4, 2021, PCT No. PCT/US2021/030571
§ 371(c)(1), (2) Date Nov. 4, 2022,
PCT Pub. No. WO2021/226020, PCT Pub. Date Nov. 11, 2021.
Claims priority of provisional application 63/136,691, filed on Jan. 13, 2021.
Claims priority of provisional application 63/020,301, filed on May 5, 2020.
Prior Publication US 2023/0286900 A1, Sep. 14, 2023
Int. Cl. C07C 219/22 (2006.01); C07C 213/08 (2006.01)
CPC C07C 219/22 (2013.01) [C07C 213/08 (2013.01); C07B 2200/13 (2013.01)] 38 Claims
 
1. A solid crystalline form of (R)-oxybutynin HCl, designated as Form C.