1-ethylpurin-6-amine 1-ethyl-6-purinamine (1-ethylpurin-6-yl)amine 21802-48-2 Adenine, 1-ethyl- (7CI,8CI) 1H-Purin-6-amine, 1-ethyl- (9CI) 1H-purin-6-amine, 1-ethyl-