US 12,122,783 B2
Stable salt of 5,10-methylene-(6R)-tetrahydrofolic acid
Rudolf Moser, Schaffhausen (CH); Viola Groehn, Dachsen (CH); Thomas Egger, Wangi (CH); and Thomas Ammann, Marthalen (CH)
Assigned to MERCK & CIE, Schaffhausen (CH)
Filed by MERCK & CIE, Schaffhausen (CH)
Filed on Oct. 8, 2021, as Appl. No. 17/496,939.
Application 17/496,939 is a continuation of application No. 16/212,056, filed on Dec. 6, 2018, abandoned.
Application 16/212,056 is a continuation of application No. 14/912,328, abandoned, previously published as PCT/EP2014/067447, filed on Aug. 14, 2014.
Claims priority of application No. 13004050 (EP), filed on Aug. 14, 2013.
Prior Publication US 2022/0024940 A1, Jan. 27, 2022
Int. Cl. C07D 475/04 (2006.01); A61K 31/519 (2006.01); A61P 35/00 (2006.01); C07D 487/14 (2006.01)
CPC C07D 487/14 (2013.01) [C07D 475/04 (2013.01)] 16 Claims
 
1. Hemisulfate salt of 5,10-methylene-(6R)-tetrahydrofolic acid.