CPC C07D 333/38 (2013.01) | 5 Claims |
1. A compound having a structure below:
wherein:
R1 is —NH2 or a salt thereof; and
R2 and R3 are independently for each occurrence selected from hydrogen, hydroxyl, C1-C6 alkyl, halogen, amino, C1-6 alkyl amine, or a salt thereof.
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