1	IMT	4-amino-(1-methylimidazole)-2-carboxylic acid	1.000
2	9TK	1-methylimidazole-2-carboxylic acid	0.900
3	PYB	4-amino-(1-methylpyrrole)-2-carboxylic acid	0.818
4	HKR	1-propylimidazole-2-carboxylic acid	0.750
5	HKU	1-propan-2-ylimidazole-2-carboxylic acid	0.750
6	3BY	1-methyl-L-proline	0.727
7	JKH	4-amino-proline	0.727
8	BVG	1h-imidazol-2-ylmethanol	0.700
9	DMI	2,3-dimethylimidazolium ion	0.700
10	XGY	(4s)-1-methylimidazolidin-4-amine	0.700