> product > Diversity Oriented Building Blocks > By Structure > Fused Heterocycles + > Pyrrolo[2,3-d]pyrimidines
![5-bromo-2-chloro-7H-pyrrolo[2,3-d]pyrimidine](images/201806/source_img/11791_G_1528158630598.jpg)
5-bromo-2-chloro-7H-pyrrolo[2,3-d]pyrimidine
![7H-pyrrolo[2,3-d]pyrimidin-2-amine](images/201806/source_img/11757_G_1528158628596.jpg)
7H-pyrrolo[2,3-d]pyrimidin-2-amine
![5-bromo-7-[trans-4-(tert-butyldimethylsilanyloxy)cyclohexyl]-2-chloro-7h-pyrrolo[2,3-d]pyrimidine](images/201806/source_img/11565_G_1528158617597.jpg)
5-bromo-7-[trans-4-(tert-butyldimethylsilanyloxy)cyclohexyl]-2-chloro-7h-pyrrolo[2,3-d]pyrimidine
![4-chloro-5-methanesulfinyl-7H-pyrrolo[2,3-d]pyrimidine](images/201806/source_img/11371_G_1528158607898.jpg)
4-chloro-5-methanesulfinyl-7H-pyrrolo[2,3-d]pyrimidine
![5-iodo-7H-pyrrolo[2,3-d]pyrimidin-4-amine](images/201806/source_img/11181_G_1528158598229.jpg)
5-iodo-7H-pyrrolo[2,3-d]pyrimidin-4-amine
![methyl 7-(benzenesulfonyl)-4-chloro-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylate](images/201806/source_img/11180_G_1528158598164.jpg)
methyl 7-(benzenesulfonyl)-4-chloro-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylate
![1h-pyrazole-1-propanenitrile, ?-cyclopentyl-4-(7h-pyrrolo[2,3-d]pyrimidin-4-yl)-, (?r)-, phosphate (1:1)](images/201806/source_img/11049_G_1528158592495.jpg)
![1h-pyrazole-1-propanenitrile, ?-cyclopentyl-4-(7h-pyrrolo[2,3-d]pyrimidin-4-yl)-, (?r-](images/201806/source_img/11048_G_1528158592971.jpg)
1h-pyrazole-1-propanenitrile, ?-cyclopentyl-4-(7h-pyrrolo[2,3-d]pyrimidin-4-yl)-, (?r-
![5-bromo-2,4-dichloro-7H-pyrrolo[2,3-d]pyrimidine](images/201806/source_img/10975_G_1528158589126.jpg)
5-bromo-2,4-dichloro-7H-pyrrolo[2,3-d]pyrimidine
![5-bromo-7-[trans-4-hydroxycyclohexyl]-2-chloro-7h-pyrrolo[2,3-d]pyrimidine](images/201806/source_img/10798_G_1528158580352.jpg)
5-bromo-7-[trans-4-hydroxycyclohexyl]-2-chloro-7h-pyrrolo[2,3-d]pyrimidine
![2,4-dichloro-5H,6H,7H-pyrrolo[2,3-d]pyrimidin-6-one](images/201806/source_img/10762_G_1528158578126.jpg)
2,4-dichloro-5H,6H,7H-pyrrolo[2,3-d]pyrimidin-6-one
![tert-butyl 2,4-dichloro-7H-pyrrolo[2,3-d]pyrimidine-7-carboxylate](images/201806/source_img/10761_G_1528158578937.jpg)
tert-butyl 2,4-dichloro-7H-pyrrolo[2,3-d]pyrimidine-7-carboxylate
![4-amino-5-bromopyrrolo[2,3-d]pyrimidine](images/201806/source_img/10563_G_1528158570272.jpg)
4-amino-5-bromopyrrolo[2,3-d]pyrimidine
![5H,6H,7H-pyrrolo[2,3-d]pyrimidin-6-one](images/201806/source_img/10508_G_1528158567087.jpg)
5H,6H,7H-pyrrolo[2,3-d]pyrimidin-6-one
![5-methyl-2-(methylsulfanyl)-7H,8H-pyrido[2,3-d]pyrimidin-7-one](images/201806/source_img/10304_G_1528158559738.jpg)
5-methyl-2-(methylsulfanyl)-7H,8H-pyrido[2,3-d]pyrimidin-7-one
![{4-chloro-7H-pyrrolo[2,3-d]pyrimidin-5-yl}methanol](images/201806/source_img/10237_G_1528158556853.jpg)
{4-chloro-7H-pyrrolo[2,3-d]pyrimidin-5-yl}methanol
![3-azetidineacetonitrile, 1-(ethylsulfonyl)-3-[4-(7h-pyrrolo[2,3-d]pyrimidin-4-yl)-1h-pyrazol-1-yl]-](images/201806/source_img/10214_G_1528158555732.jpg)
3-azetidineacetonitrile, 1-(ethylsulfonyl)-3-[4-(7h-pyrrolo[2,3-d]pyrimidin-4-yl)-1h-pyrazol-1-yl]-
![2-chloro-6-methyl-7H-pyrrolo[2,3-d]pyrimidine](images/201806/source_img/9935_G_1528158542108.jpg)
2-chloro-6-methyl-7H-pyrrolo[2,3-d]pyrimidine
![2,4-dichloro-6-methyl-7H-pyrrolo[2,3-d]pyrimidine](images/201806/source_img/9934_G_1528158542463.jpg)
2,4-dichloro-6-methyl-7H-pyrrolo[2,3-d]pyrimidine
![2,4-dichloro-5-methyl-7H-pyrrolo[2,3-d]pyrimidine](images/201806/source_img/9933_G_1528158542944.jpg)
2,4-dichloro-5-methyl-7H-pyrrolo[2,3-d]pyrimidine