1	FHO	N^5^-formyl-N^5^-hydroxy-L-ornithine	1.000
2	FH7	N^5^-formyl-N^5^-hydroxy-D-ornithine	1.000
3	AHO	N-acetyl-N-hydroxy-L-ornithine	0.923
4	CIR	Citrulline	0.846
5	ORQ	N~5~-acetyl-L-ornithine	0.846
6	ONH	N~5~-hydroxy-L-ornithine	0.833
7	A1L4B	(2s)-2-azanyl-5-nitroso-5-oxidanylidene-pentanoic acid	0.769
8	HGA	Glutamine hydroxamate	0.769
9	MEQ	N5-methylglutamine	0.769
10	J9Y	(2s)-2-amino-5-{[(E)-amino(methylamino)methylidene](hydroxy)azaniumyl}pentanoate	0.733
11	4VI	(2z,4e)-5-carbamimidamido-2-iminopent-4-enoic acid	0.714
12	85G	N-ethyl-L-glutamine	0.714
13	AR7	Amino{[(4s)-4-amino-5,5-dihydroxypentyl]amino}methaniminium	0.714
14	ARG	Arginine	0.714
15	DAR	D-arginine	0.714
16	GND	2-amino-5-guanidino-pentanoic acid	0.714
17	IAR	(2e)-5-[(diaminomethylidene)amino]-2-iminopentanoic acid	0.714
18	ILO	N5-iminoethyl-L-ornithine	0.714
19	OUE	(4~{S})-4-azanyl-5-(carboxyamino)pentanoic acid	0.714
20	QMM	N,N-dimethyl-L-glutamine	0.714
21	SCI	L-thiocitrulline	0.714