> product > Diversity Oriented Building Blocks > By Structure > Fused Heterocycles + > Pyrazolo[1,5-a][1,3,5]triazines
![8-iodo-1H,4H-pyrazolo[1,5-a][1,3,5]triazin-4-one](images/201806/source_img/10427_G_1528158564198.jpg)
8-iodo-1H,4H-pyrazolo[1,5-a][1,3,5]triazin-4-one
![2-(methylsulfanyl)-1H,4H-pyrazolo[1,5-a][1,3,5]triazin-4-one](images/201806/source_img/10254_G_1528158557945.jpg)
2-(methylsulfanyl)-1H,4H-pyrazolo[1,5-a][1,3,5]triazin-4-one
![pyrazolo[1,5-a][1,3,5]triazine](images/201806/source_img/7804_G_1528158025487.jpg)
pyrazolo[1,5-a][1,3,5]triazine
![4-chloro-pyrazolo[1,5-a][1,3,5]triazine](images/201806/source_img/5215_G_1528157580500.jpg)
4-chloro-pyrazolo[1,5-a][1,3,5]triazine
![8-bromopyrazolo[1,5-a][1,3,5]triazin-4-amine](images/201806/source_img/5214_G_1528157580450.jpg)
8-bromopyrazolo[1,5-a][1,3,5]triazin-4-amine
![pyrazolo[1,5-a][1,3,5]triazin-4-amine](images/201806/source_img/5213_G_1528157580169.jpg)
pyrazolo[1,5-a][1,3,5]triazin-4-amine
![8-Iodo-pyrazolo[1,5-a][1,3,5]triazine](images/201806/source_img/5212_G_1528157580314.jpg)
8-Iodo-pyrazolo[1,5-a][1,3,5]triazine
![8-bromo-pyrazolo[1,5-a][1,3,5]triazine](images/201806/source_img/5211_G_1528157579655.jpg)
8-bromo-pyrazolo[1,5-a][1,3,5]triazine
![4-chloro-2-(methylthio)pyrazolo[1,5-a][1,3,5]triazine](images/201806/source_img/4377_G_1528157539164.jpg)
4-chloro-2-(methylthio)pyrazolo[1,5-a][1,3,5]triazine
![8-bromopyrazolo[1,5-a][1,3,5]triazin-4(6H)-one](images/201806/source_img/3396_G_1528157502022.jpg)
8-bromopyrazolo[1,5-a][1,3,5]triazin-4(6H)-one
![pyrazolo[1,5-a][1,3,5]triazin-4(6H)-one](images/201806/source_img/3394_G_1528157502580.jpg)
pyrazolo[1,5-a][1,3,5]triazin-4(6H)-one