> product > Diversity Oriented Building Blocks > By Structure > Fused Heterocycles + > Pyrrolo[1,2-a]pyrimidines
![1-chloropyrrolo[1,2-a]pyrazine](images/201806/source_img/11771_G_1528158629207.jpg)
1-chloropyrrolo[1,2-a]pyrazine
![tert-butyl 6-formyl-1H,2H,3H,4H-pyrrolo[1,2-a]pyrazine-2-carboxylate](images/201806/source_img/11273_G_1528158602464.jpg)
tert-butyl 6-formyl-1H,2H,3H,4H-pyrrolo[1,2-a]pyrazine-2-carboxylate
![2-tert-butyl 6-methyl 1H,2H,3H,4H-pyrrolo[1,2-a]pyrazine-2,6-dicarboxylate](images/201806/source_img/10522_G_1528158568818.jpg)
2-tert-butyl 6-methyl 1H,2H,3H,4H-pyrrolo[1,2-a]pyrazine-2,6-dicarboxylate
![4-bromopyrrolo[1,2-a]pyrazine](images/201806/source_img/7801_G_1528158024914.jpg)
![Pyrrolo[1,2-a]pyrazine-4-methanol](images/201806/source_img/7800_G_1528158024238.jpg)
Pyrrolo[1,2-a]pyrazine-4-methanol
![pyrrolo[1,2-a]pyrazine-4-carbaldehyde](images/201806/source_img/7799_G_1528158024283.jpg)
pyrrolo[1,2-a]pyrazine-4-carbaldehyde
![6,8-dibromopyrrolo[1,2-a]pyrazine](images/201806/source_img/7798_G_1528158024281.jpg)
6,8-dibromopyrrolo[1,2-a]pyrazine
![Pyrrolo[1,2-a]pyrazin-8-ylmethanol](images/201806/source_img/7797_G_1528158024781.jpg)
Pyrrolo[1,2-a]pyrazin-8-ylmethanol
![pyrrolo[1,2-a]pyrazine-8-carbonitrile](images/201806/source_img/7796_G_1528158024685.jpg)
pyrrolo[1,2-a]pyrazine-8-carbonitrile
![8-bromopyrrolo[1,2-a]pyrazine](images/201806/source_img/7795_G_1528158024662.jpg)
![Pyrrolo[1,2-a]pyrazine-8-carboxaldehyde](images/201806/source_img/7794_G_1528158024160.jpg)
Pyrrolo[1,2-a]pyrazine-8-carboxaldehyde
![Pyrrolo[1,2-a]pyrazine-7-methanamine](images/201806/source_img/7758_G_1528158022021.jpg)
Pyrrolo[1,2-a]pyrazine-7-methanamine
![methyl pyrrolo[1,2-a]pyrazine-7-carboxylate](images/201806/source_img/7757_G_1528158022601.jpg)
methyl pyrrolo[1,2-a]pyrazine-7-carboxylate
![Pyrrolo[1,2-a]pyrazine-7-carboxaldehyde](images/201806/source_img/7756_G_1528158022612.jpg)
Pyrrolo[1,2-a]pyrazine-7-carboxaldehyde
![pyrrolo[1,2-a]pyrazine-7-carbonitrile](images/201806/source_img/7755_G_1528158022615.jpg)
pyrrolo[1,2-a]pyrazine-7-carbonitrile
![7-bromopyrrolo[1,2-a]pyrazine](images/201806/source_img/7754_G_1528158022754.jpg)
![1-Methylpyrrolo[1,2-a]pyrazine](images/201806/source_img/7753_G_1528158022002.jpg)
1-Methylpyrrolo[1,2-a]pyrazine
![3-methylpyrrolo[1,2-a]pyrazine](images/201806/source_img/7752_G_1528158022419.jpg)
3-methylpyrrolo[1,2-a]pyrazine
![Pyrrolo[1,2-a]pyrazine-6-carboxaldehyde](images/201806/source_img/7751_G_1528158022599.jpg)
Pyrrolo[1,2-a]pyrazine-6-carboxaldehyde
![pyrrolo[1,2-a]pyrazin-6-ylmethanol](images/201806/source_img/7750_G_1528158022409.jpg)
pyrrolo[1,2-a]pyrazin-6-ylmethanol