1	PU	Puromycin-N-aminophosphonic acid	1.000
2	PUY	Puromycin	0.846
3	VQ1	N-acetylpuromycin	0.829
4	3NZ	3'-deoxy-3'-[(O-methyl-L-tyrosyl)amino]adenosine	0.750
5	PPU	Puromycin-5'-monophosphate	0.727