1	MHS	N1-methylated histidine	1.000
2	OGC	Gamma-N-methyl-beta-oh-histidine	0.923
3	DHI	D-histidine	0.917
4	HHI	(2z)-3-(1h-imidazol-5-yl)-2-iminopropanoic acid	0.917
5	HIS	Histidine	0.917
6	2HF	2-fluoro-L-histidine	0.846
7	B3U	2-amino-L-histidine	0.846
8	EI4	Enduracididine	0.846
9	HIC	4-methyl-histidine	0.846
10	HSK	3-hydroxy-L-histidine	0.846
11	OHI	3-(2-oxo-2h-imidazol-4-yl)-L-alanine	0.846
12	U8S	3-[(2s)-2-hydroxy-2,3-dihydro-1h-imidazol-4-yl]-L-alanine	0.846
13	V5N	(2s,3s)-2-azanyl-3-(1h-imidazol-5-yl)-3-oxidanyl-propanoic acid	0.846
14	HSO	L-histidinol	0.833
15	HSV	L-histidinal	0.833
16	MWQ	3-(1~{H}-imidazol-5-yl)propanoic acid	0.833
17	URO	(2e)-3-(1h-imidazol-4-yl)acrylic acid	0.833
18	HOO	(2~{S})-2-azanyl-3-[2,5-bis(oxidanylidene)imidazol-4-yl]propanoic acid	0.786
19	OYL	1-ethyl-L-histidine	0.786
20	83O	(2s)-2-azanyl-3-(4h-1,2,4-triazol-3-yl)propanoic acid	0.769
21	DYT	(2~{S})-2-chloranyl-3-(1~{H}-imidazol-5-yl)propanoic acid	0.769
22	ECD	(4r)-4-(2-carboxyethyl)imidazolidin-2-iminium	0.769
23	HIA	L-histidine amide	0.769
24	HIX	3-(1h-1,2,3-triazol-5-yl)-L-alanine	0.769
25	KCJ	3-(1,3-thiazol-4-yl)-L-alanine	0.769
26	O66	3-[(4~{R})-5-oxidanylidene-1,4-dihydroimidazol-4-yl]propanoic acid	0.769
27	Q75	3-(1,3-thiazol-5-yl)-L-alanine	0.769
28	HJ8	(2~{S})-2-azanyl-3-(3-ethyl-5-oxidanyl-1,2,3-triazol-4-yl)propanoic acid	0.733
29	1MH	3-pyridin-3-yl-L-alanine	0.714
30	DI6	3-[(4s)-2,5-dioxoimidazolidin-4-yl]propanoic acid	0.714
31	E9V	N-methyl-L-histidine	0.714
32	PVH	Histidine-methyl-ester	0.714
33	R2P	(2r)-2-amino-3-(4-hydroxy-1,2,5-thiadiazol-3-yl)propanoic acid	0.714
34	S2P	(2s)-2-amino-3-(4-hydroxy-1,2,5-thiadiazol-3-yl)propanoic acid	0.714