Purines and Pyrimidines
#	Compound
1.	(3/5)-methylcytidine	HMDB00982
2.	1,7-dimethylxanthine	HMDB01860
3.	2-deoxyadenosine	HMDB00101
4.	2-deoxycytidine	HMDB00014
5.	2-deoxyguanosine	HMDB00085
6.	2-deoxyinosine	HMDB00071
7.	2-deoxyuridine	HMDB00012
8.	5-Hydroxymethyluracil	HMDB00469
9.	5-methylcytidine	HMDB00982
10.	7-methylguanine	HMDB00897
11.	7-methylguanosine	HMDB01107
12.	adenine	HMDB00034
13.	adenosine	HMDB00050
14.	adenylosuccinic	HMDB00536
15.	AICAR	HMDB01517
16.	AICAriboside	HMDB62179
17.	allopurinol	HMDB14581
18.	allopurinol-riboside	HMDB00481
19.	aminoimidazolecarboximide (AICA)	HMDB03192
20.	caffeine	HMDB01847
21.	cytidine	HMDB00089
22.	cytosine	HMDB00630
23.	dihydrothymine	HMDB00079
24.	dihydrouracil	HMDB00076
25.	guanine	HMDB00132
26.	guanosine	HMDB00133
27.	hypoxanthine	HMDB00157
28.	inosine	HMDB00195
29.	oxipurinol	HMDB00786
30.	paraxanthine	HMDB01860
31.	pseudouridine	HMDB00767
32.	ribothymidine	HMDB00884
33.	SAICAR	HMDB00797
34.	succinyladenosine	HMDB00912
35.	theobromine	HMDB02825
36.	theophylline	HMDB01889
37.	thymidine	HMDB00273
38.	thymine	HMDB00262
39.	uracil	HMDB00300
40.	uric	HMDB00289
41.	uridine	HMDB00296
42.	xanthine	HMDB00292
43.	xanthosine	HMDB00299