1	NCN	Nicotinate mononucleotide	1.000
2	NMN	Beta-nicotinamide ribose monophosphate	0.913
3	4EY	3-methanethioyl-1-(5-O-phosphono-beta-D-ribofuranosyl)-5-(sulfanylcarbonyl)pyridin-1-ium	0.840
4	C2R	5-amino-1-(5-O-phosphono-beta-D-ribofuranosyl)-1h-imidazole-4-carboxylic acid	0.833
5	ICR	(4r)-5-imino-1-(5-O-phosphono-beta-D-ribofuranosyl)-4,5-dihydro-1h-imidazole-4-carboxylic acid	0.833
6	MDJ	4-amino-1-(2-deoxy-5-O-phosphono-beta-D-erythro-pentofuranosyl)-3-(hydroxymethyl)pyridin-2(1h)-one	0.833
7	A1EIV	[(2~{R},3~{S},4~{R},5~{R})-3,4-bis(oxidanyl)-5-(3-sulfanylpyridin-1-yl)oxolan-2-yl]methyl dihydrogen phosphate	0.826
8	ONE	1-(beta-D-ribofuranosyl)-pyridin-4-one-5'-phosphate	0.826
9	1CC	5-carboxy-2'-deoxycytidine monophosphate	0.800
10	5HM	5-(hydroxymethyl)cytidine 5'-(dihydrogen phosphate)	0.800
11	A1BBB	5-(hydroxymethyl)uridine 5'-(dihydrogen phosphate)	0.800
12	K1F	[(2r,3s,4r,5r)-5-(3-aminocarbonyl-2-oxidanylidene-pyrazin-1-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methyl dihydrogen phosphate	0.800
13	RSQ	5-formylcytidine 5'-(dihydrogen phosphate)	0.800
14	3DU	4-hydroxy-1-(5-O-phosphono-beta-D-ribofuranosyl)pyridin-2(1h)-one	0.792
15	MDK	4-amino-1-(2-deoxy-5-O-phosphono-beta-D-erythro-pentofuranosyl)-3-methylpyridin-2(1h)-one	0.792
16	Y5P	1-(5-O-phosphono-beta-D-ribofuranosyl)-1,4-dihydropyrimidine	0.783
17	1FC	4-amino-1-(2-deoxy-2-fluoro-5-O-phosphono-beta-D-arabinofuranosyl)-2-oxo-1,2-dihydropyrimidine-5-carboxylic acid	0.769
18	1RP	6-fluoro-3-oxo-4-(5-O-phosphono-beta-D-ribofuranosyl)-3,4-dihydropyrazine-2-carboxamide	0.769
19	JLN	5-(formylamino)-1-(5-O-phosphono-beta-D-ribofuranosyl)-1h-imidazole-4-carboxylic acid	0.769
20	JQS	5-[(z)-(aminomethylidene)amino]-1-(5-O-phosphono-beta-D-ribofuranosyl)-1h-imidazole-4-carboxylic acid	0.769
21	5FC	5-formyl-2'-deoxy-cytidine-5'-monophosphate	0.760
22	5HC	2'-deoxy-5-(hydroxymethyl)cytidine 5'-(dihydrogen phosphate)	0.760
23	5HU	5-hydroxymethyluridine-2'-deoxy-5'-monophosphate	0.760
24	5MC	5-methylcytidine-5'-monophosphate	0.760
25	5MU	5-methyluridine 5'-monophosphate	0.760
26	A1I9V	5-methyl-2-thio-uridine-5'-monophosphate	0.760
27	AMZ	Aminoimidazole 4-carboxamide ribonucleotide	0.760
28	MZP	4-carbamoyl-1-beta-D-ribofuranosyl-imidazolium-5-olate-5'-phosphate	0.760
29	UFR	2'-deoxy-5-formyluridine 5'-(dihydrogen phosphate)	0.760
30	5PY	1-(2'-deoxy-5'-O-phosphono-beta-D-erythro-pentofuranosyl)-5-methylpyrimidin-2(1h)-one	0.750
31	9L3	[(2r,3s,5r)-5-(4-azanyl-5-methyl-pyrimidin-1-ium-1-yl)-3-oxidanyl-oxolan-2-yl]methyl dihydrogen phosphate	0.750
32	PYO	1-(beta-D-ribofuranosyl)-pyrimidin-2-one-5'-phosphate	0.750
33	TA3	(4s,5r)-3-(2-deoxy-5-O-phosphono-beta-D-erythro-pentofuranosyl)-5-methyl-1,3-diazabicyclo[2.2.0]hexan-2-one	0.750
34	IRN	1-(5-O-phosphono-beta-D-ribofuranosyl)-1h-imidazole	0.739
35	A1BBC	1-(2-deoxy-2-fluoro-5-O-phosphono-beta-D-arabinofuranosyl)-5-(hydroxymethyl)pyrimidine-2,4(1h,3h)-dione	0.731
36	C36	5-methyl-5-fluoro-2'-deoxy-cytidine-5'-monophosphate	0.731
37	CNU	5-cyano-uridine-5'-monophosphate	0.731
38	FMU	5-fluoro-5-methyluridine-5'-monophosphate	0.731
39	RMB	N1-(5'-phospho-alpha-ribosyl)-5-methylbenzimidazole	0.731
40	XFC	4-amino-1-(2-deoxy-2-fluoro-5-O-phosphono-beta-D-arabinofuranosyl)-2-oxo-1,2-dihydropyrimidine-5-carbaldehyde	0.731
41	ENJ	(4s)-5-methanethioyl-1-(5-O-phosphono-beta-D-ribofuranosyl)-4-sulfo-1,4-dihydropyridine-3-carbothioic S-acid	0.724
42	0C	L-cytidine-5'-monophosphate	0.720
43	0DT	2'-deoxy-L-ribo-furanosyl thymidine-5'-monophosphate	0.720
44	0U	L-uridine-5'-monophosphate	0.720
45	4SU	4-thiouridine-5'-monophosphate	0.720
46	5CM	5-methyl-2'-deoxy-cytidine-5'-monophosphate	0.720
47	6F7	3'-deoxy-5-methyluridine 5'-(dihydrogen phosphate)	0.720
48	8XC	4-amino-1-(5-O-phosphono-beta-D-xylofuranosyl)pyrimidin-2(1h)-one	0.720
49	8XU	1-(5-O-phosphono-beta-D-xylofuranosyl)pyrimidine-2,4(1h,3h)-dione	0.720
50	A1AAZ	2-thio-thymidine	0.720
51	C	Cytidine-5'-monophosphate	0.720
52	C5P	Cytidine-5'-monophosphate	0.720
53	CAR	Cytosine arabinose-5'-phosphate	0.720
54	CH	N3-protonated cytidine-5'-monophosphate	0.720
55	DT	Thymidine-5'-monophosphate	0.720
56	H2U	5,6-dihydrouridine-5'-monophosphate	0.720
57	IC	Isocytidine-5'-monophosphate	0.720
58	IMC	N1-[2-deoxy-ribofuranosyl]-[2-amino-5-methyl-4-oxo-4h-pyrimidine]-5'-monophosphate	0.720
59	IY0	[5-(4-azanyl-2-oxidanylidene-pyrimidin-1-yl)-3,4-bis(oxidanyl)furan-2-yl]methyl dihydrogen phosphate	0.720
60	MUM	5'-O-(dihydroxyphosphanyl)-5-methyl-5,6-dihydrouridine	0.720
61	PBT	[3-hydroxy-5-(5-methyl-2,4-dioxotetrahydro-1(2h)-pyrimidinyl)tetrahydro-2-furanyl]methyl dihydrogen phosphate	0.720
62	QBT	[(2r,3s,5r)-3-hydroxy-5-[(5s)-5-methyl-2,4-dioxo-1,3-diazinan-1-yl]oxolan-2-yl]methyl dihydrogen phosphate	0.720
63	RSP	4-amino-1-(5-O-phosphono-beta-D-ribofuranosyl)pyrimidine-2(1h)-thione	0.720
64	RUS	1-(5-O-phosphono-beta-D-ribofuranosyl)-2-selanylpyrimidin-4(1h)-one	0.720
65	RY	5'-3,6-dihydrocytidylic acid	0.720
66	SUR	1-(beta-D-ribofuranosyl)-2-thio-uracil-5'-phosphate	0.720
67	T4S	1-(2-deoxy-5-O-phosphono-beta-D-erythro-pentofuranosyl)-4-hydroseleno-5-methylpyrimidin-2(1h)-one	0.720
68	TMP	Thymidine-5'-phosphate	0.720
69	U	Uridine-5'-monophosphate	0.720
70	U48	5-methyl-2'-deoxy-n3-protonated cytidine-5'-monophosphate	0.720
71	U5P	Uridine-5'-monophosphate	0.720
72	UAR	Uracil arabinose-5'-phosphate	0.720
73	US3	1-(2-deoxy-5-O-phosphono-beta-D-erythro-pentofuranosyl)-5-methyl-2-selanylpyrimidin-4(1h)-one	0.720
74	US5	1-(5-O-phosphono-beta-D-ribofuranosyl)-4-selanylpyrimidin-2(1h)-one	0.720
75	AIR	5-aminoimidazole ribonucleotide	0.708
76	CDW	(4r)-3-(2-deoxy-5-O-phosphono-beta-D-erythro-pentofuranosyl)-1,3-diazabicyclo[2.2.0]hex-5-en-2-one	0.708
77	Z	1-(2-deoxy-5-O-phosphono-beta-D-erythro-pentofuranosyl)pyrimidin-2(1h)-one	0.708
78	FAI	5-(formylamino)-1-(5-O-phosphono-beta-D-ribofuranosyl)-1h-imidazole-4-carboxamide	0.704
79	MNU	(2r,4s)-1-[(4r)-3,4-dihydroxytetrahydrofuran-2-yl]-5-[(methylamino)methyl]-1,2,3,4-tetrahydropyrimidine-2,4-diol-5'-mon ophosphate	0.704
80	RBZ	Alpha-ribazole-5'-phosphate	0.704
81	U8U	5-methylaminomethyl-2-thiouridine-5'-monophosphate	0.704