Bromide and its crystal
OwnerIsao Kinoyama, Kenichirou Sakamoto +3inventors
InventorsIsao Kinoyama, Kenichirou Sakamoto, Hiroki Okui, Noritaka Hamada, Akira Matsuhisa
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Abstract
The 1-(2-methoxyethyl)-2-methyl-4,9-dioxo-3-(pyrazin-2-ylmethyl)-4,9-dihydro-1H-naphtho[2,3-d]imidazol-3-ium bromide of the invention and its crystals, particularly α- and β- form Crystals, have no hygroscopic property, have excellent stability and therefore are useful as production materials of medicines. Particularly, the β- form Crystal is most stable and markedly useful as a bulk for medicines.
Claims6
1-(2-Methoxyethyl)-2-methyl-4,9-dioxo-3-(pyrazin-2-ylmethyl)-4,9-dihydro-1H-naphtho[2,3-d]imidazol-3-ium bromide.
A crystal of 1-(2-methoxyethyl)-2-methyl-4,9-dioxo-3-(pyrazin-2-ylmethyl)-4,9-dihydro-1H-naphtho[2,3-d]imidazol-3-ium bromide.
Dependencies are inferred from the claim text.