Yellow pteridine having a hue-angle of at least 98

Details Yellow pteridine having a hue-angle of at least 98 Yellow pteridine having a hue-angle of at least 98

C - Chemistry, Metallurgy

07

D

C07D 487/14 (2006.01) C07D 239/00 (2006.01) C07D 241/00 (2006.01) C08K 5/34 (2006.01) C09B 17/00 (2006.01) C09B 57/00 (2006.01)

Patent

CA 2313634

The 2,4,5,7-tetraaminopyrimido[5,4-g]pteridine of formula (I) characterized by a hue-angle h of not less than 98, processes for preparing the pteridine I of the invention, novel, insoluble 2,4,5,7-tetraaminopyrimido[5,4-g]pteridine salts, their preparation and the use of the pteridines of the invention.

L'invention concerne une 2,4,5,7-tétraaminopyrimido[5,4-g]ptéridine correspondant à la formule (I) et caractérisée par un angle de phase h d'au minimum 98, des procédés de préparation de la ptéridine (I) de l'invention, des nouveaux sels insolubles de 2,4,5,7-tétraaminopyrimido[5,4-g]ptéridine, des procédés de préparation de ceux-ci, et l'utilisation des ptéridines de l'invention.

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