The Nucleic Acid Modification Database

ID	Symbol	Common_Name	Chemical_Formula	Nucleoside_Mass
59	Ψ	pseudouridine	C₉H₁₂N₂O₆	244.2
60	D	dihydrouridine	C₉H₁₄N₂O₆	246.22
61	m⁵U	5-methyluridine	C₁₀H₁₄N₂O₆	258.23
62	Um	2'-O-methyluridine	C₁₀H₁₄N₂O₆	258.23
63	m¹Ψ	1-methylpseudouridine	C₁₀H₁₄N₂O₆	258.23
64	Ψm	2'-O-methylpseudouridine	C₁₀H₁₄N₂O₆	258.23
65	m³U	3-methyluridine	C₁₀H₁₄N₂O₆	258.23
66	m³Ψ	3-methylpseudouridine	C₁₀H₁₄N₂O₆	258.23
67	ho⁵U	5-hydroxyuridine	C₉H₁₂N₂O₇	260.2
68	m⁵D	5-methyldihydrouridine	C₁₀H₁₆N₂O₆	260.25
69	s²U	2-thiouridine	C₉H₁₂N₂O₅S	260.27
70	s⁴U	4-thiouridine	C₉H₁₂N₂O₅S	260.27
71	m⁵Um	5,2'-O-dimethyluridine	C₁₁H₁₆N₂O₆	272.26
72	m³Um	3,2'-O-dimethyluridine	C₁₁H₁₆N₂O₆	272.26
73	mo⁵U	5-methoxyuridine	C₁₀H₁₄N₂O₇	274.23
74	m⁵s²U	5-methyl-2-thiouridine	C₁₀H₁₄N₂O₅S	274.3
75	s²Um	2-thio-2'-O-methyluridine	C₁₀H₁₄N₂O₅S	274.3
76	cnm⁵U	5-cyanomethyl-uridine	C₁₁H₁₃N₃O₆	283.15
77	mnm⁵U	5-methylaminomethyluridine	C₁₁H₁₇N₃O₆	287.27
78	nm⁵s²U	5-aminomethyl-2-thiouridine	C₁₀H₁₅N₃O₅S	289.31
79	ncm⁵U	5-carbamoylmethyluridine	C₁₁H₁₅N₃O₇	301.26
80	cm⁵U	5-carboxymethyluridine	C₁₁H₁₄N₂O₈	302.24
81	mnm⁵s²U	5-methylaminomethyl-2-thiouridine	C₁₁H₁₇N₃O₅S	303.33
82	ncm⁵Um	5-carbamoylmethyl-2'-O-methyluridine	C₁₂H₁₇N₃O₇	315.28
83	mcm⁵U	5-methoxycarbonylmethyluridine	C₁₂H₁₆N₂O₈	316.27
84	cmo⁵U	uridine 5-oxyacetic acid	C₁₁H₁₄N₂O₉	318.24
85	chm⁵U	5-(carboxyhydroxymethyl)uridine	C₁₁H₁₄N₂O₉	318.24
86	mcm⁵Um	5-methoxycarbonylmethyl-2'-O-methyluridine	C₁₃H₁₈N₂O₈	330.29
87	cmnm⁵U	5-carboxymethylaminomethyluridine	C₁₂H₁₇N₃O₈	331.28
88	mcmo⁵U	uridine 5-oxyacetic acid methyl ester	C₁₂H₁₆N₂O₉	332.27
89	mchm⁵U	5-(carboxyhydroxymethyl)uridine methyl ester	C₁₂H₁₆N₂O₉	332.27
90	mcm⁵s²U	5-methoxycarbonylmethyl-2-thiouridine	C₁₂H₁₆N₂O₇S	332.33
91	mnm⁵se²U	5-methylaminomethyl-2-selenouridine	C₁₁H₁₇N₃O₅Se	350.23
92	inm⁵Um	5-(isopentenylaminomethyl)- 2'-O-methyluridine	C₁₆H₂₅N₃O₆	355.39
93	inm⁵s²U	5-(isopentenylaminomethyl)- 2-thiouridine	C₁₅H₂₃N₃O₅S	357.43
94	m¹acp³Ψ	1-methyl-3-(3-amino-3-carboxypropyl) pseudouridine	C₁₄H₂₁N₃O₈	359.34
95	tm⁵U	5-taurinomethyluridine	C₁₂H₁₉N₃O₉S	381.36
96	tm⁵s²U	5-taurinomethyl-2-thiouridine	C₁₂H₁₉N₃O₈S₂	397.43
97	gmnm⁵s²U	geranylated 5-methylaminomethyl-2-thiouridine	C₂₁H₃₃N₃O₅S	439.32
98	gcmnm⁵s²U	geranylated 5-carboxymethylaminomethyl-2-thiouridine	C₂₂H₃₃N₃O₇S	483.58
99	inm⁵U	5-(isopentenylaminomethyl)uridine	C₁₅H₂₃N₃O₆	341.36
100	acp³U	3-(3-amino-3-carboxypropyl)uridine	C₁₃H₁₉N₃O₈	345.19
101	cmnm⁵Um	5-carboxymethylaminomethyl- 2'-O-methyluridine	C₁₃H₁₉N₃O₈	345.31
102	cmnm⁵s²U	5-carboxymethylaminomethyl-2-thiouridine	C₁₂H₁₇N₃O₇S	347.35