1 SMZ N~5~-[(E)-imino(methylsulfanyl)methyl]-L-ornithine 1.000 2 SCI L-thiocitrulline 0.923 3 4VI (2z,4e)-5-carbamimidamido-2-iminopent-4-enoic acid 0.786 4 AR7 Amino{[(4s)-4-amino-5,5-dihydroxypentyl]amino}methaniminium 0.786 5 ARG Arginine 0.786 6 CIR Citrulline 0.786 7 DAR D-arginine 0.786 8 GND 2-amino-5-guanidino-pentanoic acid 0.786 9 IAR (2e)-5-[(diaminomethylidene)amino]-2-iminopentanoic acid 0.786 10 ILO N5-iminoethyl-L-ornithine 0.786 11 4D4 (2s,3r)-2-azanyl-5-carbamimidamido-3-oxidanyl-pentanoic acid 0.733 12 4JK (S)-2-amino-5-(2-hydroxyacetimidamido)pentanoic acid 0.733 13 AGM 5-methyl-arginine 0.733 14 ARO C-gamma-hydroxy arginine 0.733 15 FIO N~5~-[(1e)-2-fluoroethanimidoyl]-L-ornithine 0.733 16 HAR N-omega-hydroxy-L-arginine 0.733 17 LN5 N5-(1-iminopropyl)-L-ornithine 0.733 18 NMM (2s)-2-amino-5-[(N-methylcarbamimidoyl)amino]pentanoic acid 0.733 19 VUR (S)-2-amino-5-(2-mercaptoacetimidamido)pentanoic acid 0.733 20 WT2 (S)-2-amino-5-(2-oxoacetimidamido)pentanoic acid 0.733 21 WYK (2s,4s)-4-hydroxy-L-arginine 0.733 22 ZZU (2s,3s)-3-hydroxyarginine 0.733 23 CYR N~5~-[{[(2r)-2-amino-2-carboxyethyl]sulfanyl}(iminio)methyl]-L-ornithinate 0.722 24 GVA 5-{[amino(imino)methyl]amino}pentanoic acid 0.714 25 MEQ N5-methylglutamine 0.714 26 OAR N-(4-amino-5-hydroxy-pentyl)-guanidine 0.714 27 RGL Arginal 0.714