4,6-Dihydroxy-5-methoxypyrimidine
5-Methoxy-pyrimidine-4,6-diol

2,4-Dihydroxythieno[3,2-d]pyrimidine

4,6-Dimethoxypyrimidine

2-Methoxypyrimidin-4-ol
2-Hydroxy-6-methoxypyrimidine

1H-Pyrazolo[3,4-d]pyrimidin-4-ol

6H-[1,2,4]Triazolo[1,5-c]pyrimidin-5-one
[1,2,4]Triazolo[1,5-c]pyrimidin-5-ol

2-Chloro-4-(trifluoromethyl)pyrimidine-5-carbonylchloride

2-Amino-6-hydroxymethyl-3H-pyrimidin-4-one

Azidothymidine (AZT)
Zidovudine

Stavudine
2'-3'-Didehydro-2'-3'-dideoxythymidine

6-Chloro-5-formyl-1,3-dimethyluracil
6-Chloro-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydro-pyrimidine-5-carbaldehyde

4-Chloro-5-formyl-6-thiomethylpyrimidine

4,6-Dichloropyrimidine-5-carboxaldehyde
4,6-Dichloropyrimidine-5-carbaldehyde

4,6-Dimethoxypyrimidine-2yl-carboxaldehyde

Pyrimidine-5-carboxaldehyde
5-Formylpyrimidine

2-(Trifluoromethyl)-5-pyrimidinecarboxaldehyde

5-Chloro-6-(chloromethyl)pyrimidine-2,4(1H,3H)-dione
5-Chloro-6-chloromethyl-1H-pyrimidine-2,4-dione

2-Chloropyrimidine-4-carboxamide

tert-Butyl 2-amino-5H-pyrrolo[3,4-d]pyrimidine-6(7H)-carboxylate

7-Benzyl-4-chloro-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidine HCl

6-Benzyl-2,4-dichloro-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine

7-Benzyl-2,4-dichloro-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidine

6-Benzyl-6,7-dihydro-1H-pyrrolo[3,4-d]pyrimidine-2,4(3H,5H)-dione

6-Benzyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine-2,4(1H,3H)-dione

7-Benzyl-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidine-2,4(1H,3H)-dione

6-Benzyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4(3H)-one

7-Benzyl-5,6,7,8-tetrahydro-3H-pyrido[3,4-d]pyrimidin-4-one

6-Benzyl-3,5,6,7-tetrahydropyrrolo[3,4-d]pyrimidin-4-one

5-Bromo-2-piperazin-1-yl-pyrimidine
5-Bromo-2-piperazine-1-yl-pyrimidine

tert-Butyl 2-amino-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate

tert-Butyl-4-(2-chloro-5-fluoropyrimidin-4-yl)piperidine-1-carboxylate
4-(2-Chloro-5-fluoro-pyrimidin-4-yl)-piperidine-1-carboxylic acid tert-butyl ester

tert-Butyl 4-(2-chloropyrimidin-4-yl)piperidine-1-carboxylate

tert-Butyl 2,4-Dichloro-5,6-dihydropyrido[3,4-d]pyrimidine-7(8H)-carboxylate

tert-butyl 2,4-Dichloro-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate

tert-butyl 2,4-Dichloro-5H-pyrrolo[3,4-d]pyrimidine-6(7H)-carboxylate

tert-Butyl 7,8-dihydro-2-(methylsulfonyl)pyrido[4,3-d]pyrimidine-6(5H)-carboxylate

tert-butyl 7,8-Dihydro-2-(pyridin-2-yl)pyrido[4,3-d]pyrimidine-6(5H)-carboxylate
2-Pyridin-2-yl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine-6-carboxylic acid tert-butyl ester

4-Chloro-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine HCl

2,4-Dichloro-6,7-dihydro-5H-pyrrolo[3,4-d]pyrimidine HCl

2,4-Dichloro-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidine

2,4-Dichloro-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine TFA

6,7-Dihydro-1H-pyrrolo[3,4-d]pyrimidine-2,4(3H,5H)-dione HCl

Ethyl 2-(5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)acetate HCl

Ethyl 2-(5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-yl)acetate HCl

tert-Butyl 2-methyl-5H-pyrrolo[3,4-d]pyrimidine-6(7H)-carboxylate

Pyrrolo[1,2-c]pyrimidine-3-ylmethaneamine HCl

5,6,7,8-Tetrahydro-4-methoxypyrido[3,4-d]pyrimidine HCl

5,6,7,8-Tetrahydro-4-methoxypyrido[4,3-d]pyrimidine HCl

5,6,7,8-Tetrahydro-4-methylpyrido[3,4-d]pyrimidine HCl

5,6,7,8-Tetrahydro-4-methylpyrido[4,3-d]pyrimidine HCl

4,5,6,7-Tetrahydropyrazolo[1,5-a]pyrimidine

5,6,7,8-Tetrahydropyrido[4,3-d]pyrimidine-2,4(1H,3H)-dione HCl

5,6,7,8-Tetrahydropyrido[4,3-d]pyrimidin-4(3H)-one

5,6,7,8-Tetrahydropyrido[3,4-d]pyrimidin-4(3H)-one HCl

2-Amino-5-cyanopyrrolo[2,3-d]pyrimidine-4-one

2-Amino-5-hydroxypyrimidine

4-Amino-2-methoxypyrimidine

5-Aminopyrimidine
Pyrimidin-5-ylamine

N-(4-Aminopyrimidin-2-yl)-N-methylamine

4-Amino-7H-pyrrolo[2,3-d]pyrimidine-2-thiol

2-(N-Anilino)pyrimidine

2-Ethoxypyrimidin-4yl-amine

4-Hydrazino-1H-pyrimidin-2-one
N(4)-Aminocytosine

1H-Pyrazolo[3,4-d]pyrimidin-4-amine

4-Acetylamino-5-bromo-2-chloropyrimidine

4-Amino-5-bromo-2-chloropyrimidine

4-Amino-2-chloro-5-methylpyrimidine
2-Chloro-5-methyl-pyrimidin-4-ylamine

4-Amino-6-chloropyrimidine

5-Amino-2-chloropyrimidine

2-Amino-4-iodo-6-methoxypyrimidine

6-Benzyl-4-chloro-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine

6-Benzyl-4-chloro-4,5,6,7-tetrahydro-3H-pyrrolo[3,4-d]pyrimidine HCl

5-Bromo-2-chloro-4-(dimethylamino)pyrimidine

3-Bromo-4-chloro-1H-pyrazolo[3,4-d]pyrimidine

5-Bromo-2-chloropyrimidine

5-Bromo-4-chloro-7H-pyrrolo[2,3-d]pyrimidine

6-Bromo-4-chlorothieno[2,3-d]pyrimidine

7-Bromo-4-chlorothieno[3,2-d]pyrimidine

5-Bromo-2,4-dichloropyrimidine

5-Bromo-2,4-dimethoxypyrimidine

5-Bromo-4,6-dimethoxypyrimidine

5-Bromo-4-N,N-dimethylamino-2-methoxypyrimidine

5-Bromo-2-ethoxypyrimidine

5-Bromo-2-hydroxypyrimidine
5-Bromo-2(1H)-pyrimidinone,

6-Bromoimidazo[1,2-a]pyrimidine

5-Bromo-2-iodopyrimidine

5-Bromo-2-(isopropylamino)pyrimidine

5-Bromo-2-methoxypyrimidine

5-Bromo-2-(methylthio)pyrimidine
5-Bromo-2-methylsulfanylpyrimidine

5-Bromo-2-methylsulfanylpyrimidin-4-ol
5-Bromo-2-methylsulfanyl-3H-pyrimidin-4-one

5-Bromo-2-(methylsulphonyl)pyrimidine

5-Bromo-2-morpholin-1-yl-pyrimidine
5-Bromo-2-(N-morpholine)pyrimidine

2-Bromopyrimidine

5-Bromopyrimidine

7-Bromothieno[3,2-d]pyrimidine

7-Bromothieno[3,2-d]pyrimidin-4(3H)-one

4-Chlorofuro[2,3-d]pyrimidine

5-Chloro-2-iodopyrimidine

4-Chloro-2-methanesulfonylpyrimidine

4-Chloro-6-methoxypyrimidine

2-Chloro-4-methylpyrimidine

2-Chloro-5-methylpyrimidine

5-Chloro-6-methylpyrimidine-2,4(1H,3H)-dione
5-Chloro-6-methyl-1H-pyrimidine-2,4-dione

2-Chloro-6-methylpyrimidin-4yl-amine

2-Chloro-4-methylthiopyrimidine
2-Chloro-4-methylsulfanylpyrimidine

4-Chloro-2-(methylthio)pyrimidine

4-Chloro-2-(methylthio)-7H-pyrrolo[2,3-d]pyrimidine

2-Chloro-5-nitropyrimidine

4-Chloro-1H-pyrazolo[3,4-d]pyrimidine

6-Chloropyrido[3,2-d]pyrimidin-4(3H)-one

4-Chloro-7H-pyrrolo[2,3-d]pyrimidin-2-amine

4-Chloro-7H-pyrrolo[2,3-d]pyrimidine

4-Chloro-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid methyl ester
Methyl 4-chloro-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylate

4-Chlorothieno[2,3-d]pyrimidine

4-Chlorothieno[3,2-d]pyrimidine

5-Chloro-[1,2,4]triazolo[1,5-c]pyrimidine

2,4-Dichloro-7,8-dihydro-5H-thiopyrano[4,3-d]pyrimidine

5,7-Dichloro-3-ethylpyrazolo[1,5-a]pyrimidine

4,6-Dichloro-5-methoxypyrimidine

2,6-Dichloro-7-methylpurine

2,4-Dichloro-5-methylpyrimidine

2,4-Dichloro-6-methylpyrimidin-5-ylamine

4,6-Dichloro-1H-pyrazolo[3,4-d]pyrimidine

5,7-Dichloropyrazolo[1,5-a]pyrimidine

4,6-Dichloropyrido[3,2-d]pyrimidine

2,4-Dichloropyrimidine

2,5-Dichloropyrimidine

4,6-Dichloropyrimidine

2,4-Dichloro-5H-pyrrolo[3,2-d]pyrimidine

2,4-Dichloro-7H-pyrrolo[2,3-d]pyrimidine

5,7-Dichlorothiazolo[5,4-d]pyrimidine

2,4-Dichlorothieno[3,2-d]pyrimidine

4,6-Diiodopyrimidine

Ethyl 6-bromopyrrolo[1,2-c]pyrimidine-3-carboxylate

Ethyl 7-chloroimidazo[1,2-c]pyrimidine-2-carboxylate

Ethyl 7-chloropyrazolo[1,5-a]pyrimidine-6-carboxylate

Ethyl 4-chloro-2-(pyridin-3-yl)pyrimidine-5-carboxylate

Ethyl 4-chloro-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylate

Ethyl 4-chlorothieno[3,2-d]pyrimidine-6-carboxylate

5-Iodo-1,3-dimethyl-1H-pyrimidine-2,4-dione
5-Iodo-1,3-dimethyluracil

4-Iodo-6-methoxypyrimidine

4-Iodo-2-(methylthio)pyrimidine

Methyl 5,7-dichloropyrazolo[1,5-a]pyrimidine-3-carboxylate

2,4,7-Trichloropyrido[2,3-d]pyrimidine

2,4-Dimethoxypyrimidine-5-boronic acid

2-Ethoxypyrimidine-5-boronic acid

2-Methoxypyrimidine-5-boronic acid
2-Methoxy-5-pyrimidylboronic acid

2-(Methylthio)pyrimidine-5-boronic acid
2-(Methylthio)pyrimidin-5-ylboronic acid

Pyrimidine-5-boronic acid

Pyrimidine-5-boronic acid pinacol ester

2-Aminopyrimidine-4-carboxylic acid

2-Chloropyrimidine-5-carboxylic acid

4-Chlorothieno[3,2-d]pyrimidine-6-carboxylic acid

4,6-Dimethoxypyrimidine-2yl-carboxylic acid

2-Hydroxypyrimidine-5-carboxylic acid

6-Hydroxypyrimidine-4-carboxylic acid
1,6-Dihydro-6-oxo-4-pyrimidinecarboxylic acid

Pyrimidine-2-carboxylic acid

Pyrimidine-4-carboxylic acid

Pyrimidine-5-carboxylic acid
5-Pyrimidinecarboxylic acid

3-(Pyrimidin-4-yl)benzoic acid

Pyrrolo[1,2-c]pyrimidine-3-carboxylic acid

tert-Butyl 5-bromo-2-(methylthio)-6-oxopyrimidine-1-acetate
tert-Butyl [5-bromo-2-(methylthio)-6-oxopyrimidin-1(6H)-yl]acetate

Ethyl 4-hydroxy-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylate

Ethyl pyrrolo[1,2-c]pyrimidine-3-carboxylate
Pyrrolo[1,2-c]pyrimidine-3-carboxylic acid ethyl ester

Methyl pyrimidine-2-carboxylate

4-Amino-2-chloro-5-fluoropyrimidine

2-Bromo-5-fluoropyrimidine
2-Bromo-5-fluoro-1-pyrimidine

5-Bromo-2-fluoropyrimidine

3-Bromo-7-(trifluoromethyl)imidazo[1,2-a]pyrimidine

2-Chloro-4-(dimethylamino)-5-fluoropyrimidine

2-Chloro-5-fluoropyrimidine

4-Chloro-5-fluoropyrimidine

4-Chloro-6-fluoropyrimidine

2,4-Dichloro-5-fluoropyrimidine

Ethyl 2-(trifluoromethyl)pyrimidine-5-carboxylate

5-Fluoro-4-hydroxypyrimidine

Methyl 2-chloro-4-(trifluoromethyl)pyrimidine-5-carboxylate

2-Methylthiopyrimidine
2-Methylsulfanylpyrimidine

2-Methylthiopyrimidin-4-ol
2-Methylsulfanylpyrimidin-4-ol

2-(Methylthio)-7H-pyrrolo[2,3-d]pyrimidin-4-ol

2-Chloropyrimidine-4-carbonitrile

5-Chloro-2-(methylthio)-4-(tributylstannyl)pyrimidine
5-Chloro-2-methylsulfanyl-4-tribuylstannanylpyrimidine

2-Chloro-5-(tributylstannyl)pyrimidine

2-Ethoxy-5-(tributylstannyl)pyrimidine

2-(Methylsulfonyl)-5-(tributylstannyl)pyrimidine

2-(Methylthio)-4-(tributylstannyl)pyrimidine

2-Methylthio-5-(tributylstannyl)pyrimidine

5-Tributylstannyl-1,3-dimethyluracil
2,4(1H,3H)-Pyrimidinedione, 1,3-dimethyl-5-(tributylstannyl)-

5-(Tributylstannyl)-2-pyrimidinamine

2-(Tributylstannyl)pyrimidine

5-(Tributylstannyl)pyrimidine

tert-Butyl 3-(2-(methylsulfonyl)pyrimidin-4-yl)piperidine-1-carboxylate

2,4-Dichloro-7,8-dihydro-5H-S,S-di-oxoisothiopyrano[4,3-d]pyrimidine

4,6-Dimethoxy-2-(methylsulfonyl)pyrimidine
2-Methylsulfonyl-4,6-dimethoxypyrimidine

2-(Methylsulphonyl)pyrimidine
2-(Methylsulfonyl)pyrimidine

Pyrimidine-2-sulfonyl fluoride