CPC C07D 487/04 (2013.01) [A61P 35/00 (2018.01)] | 38 Claims |
1. A maleate salt of a triazolopyrazine derivative represented by Chemical Formula 2, wherein the maleate salt has a chemical purity of at least about 4.7% greater than a free base form represented by Chemical Formula 1 after about 15 months at 40 ° C. and 75% relative humidity:
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