> product > Diversity Oriented Building Blocks > By Structure > Fused Heterocycles + > Pyrazolo[1,5-a]pyrimidines
![3-nitro-4H,5H,6H,7H-pyrazolo[1,5-a]pyrimidine](images/201806/source_img/11584_G_1528158618705.jpg)
3-nitro-4H,5H,6H,7H-pyrazolo[1,5-a]pyrimidine
![2-methylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid](images/201806/source_img/11432_G_1528158610463.jpg)
2-methylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid
![5-chloropyrazolo[1,5-a]pyrimidine-3-carboxylic acid](images/201806/source_img/11134_G_1528158596879.jpg)
5-chloropyrazolo[1,5-a]pyrimidine-3-carboxylic acid
![ethyl 3-bromopyrazolo[1,5-a]pyrimidine-6-carboxylate](images/201806/source_img/10998_G_1528158590863.jpg)
ethyl 3-bromopyrazolo[1,5-a]pyrimidine-6-carboxylate
![5-chloropyrazolo[1,5-a]pyrimidin-3-amine](images/201806/source_img/10098_G_1528158550795.jpg)
5-chloropyrazolo[1,5-a]pyrimidin-3-amine
![pyrazolo[1,5-a]pyrimidin-3-amine; trifluoroacetic acid](images/201806/source_img/9569_G_1528158528886.jpg)
pyrazolo[1,5-a]pyrimidin-3-amine; trifluoroacetic acid
![3-nitropyrazolo[1,5-a]pyrimidine](images/201806/source_img/9567_G_1528158528947.jpg)
3-nitropyrazolo[1,5-a]pyrimidine
![7-Chloropyrazolo[1,5-a]pyrimidine-3-carbonitrile](images/201806/source_img/8853_G_1528158075201.jpg)
7-Chloropyrazolo[1,5-a]pyrimidine-3-carbonitrile
![2-fluoropyrazolo[1,5-a]pyrimidine-5,7-diol](images/201806/source_img/8772_G_1528158071770.jpg)
2-fluoropyrazolo[1,5-a]pyrimidine-5,7-diol
![2-aminopyrazolo[1,5-a]pyrimidine-3-carboxylic acid](images/201806/source_img/8368_G_1528158053539.jpg)
2-aminopyrazolo[1,5-a]pyrimidine-3-carboxylic acid
![6-nitropyrazolo[1,5-a]pyrimidine-3-carbonitrile](images/201806/source_img/8233_G_1528158046400.jpg)
6-nitropyrazolo[1,5-a]pyrimidine-3-carbonitrile
![6-nitropyrazolo[1,5-a]pyrimidine-3-carboxylic acid](images/201806/source_img/8232_G_1528158046620.jpg)
6-nitropyrazolo[1,5-a]pyrimidine-3-carboxylic acid
![3-(trifluoromethyl)pyrazolo[1,5-a]pyrimidin-6-amine](images/201806/source_img/8231_G_1528158046648.jpg)
3-(trifluoromethyl)pyrazolo[1,5-a]pyrimidin-6-amine
![6-bromo-3-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine](images/201806/source_img/8230_G_1528158046449.jpg)
6-bromo-3-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine
![6-bromo-2-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine](images/201806/source_img/8229_G_1528158046102.jpg)
6-bromo-2-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine
![6-aminopyrazolo[1,5-a]pyrimidine-3-carboxylic acid](images/201806/source_img/8228_G_1528158046741.jpg)
6-aminopyrazolo[1,5-a]pyrimidine-3-carboxylic acid
![3-cyclopropylpyrazolo[1,5-a]pyrimidin-6-amine](images/201806/source_img/8227_G_1528158046279.jpg)
3-cyclopropylpyrazolo[1,5-a]pyrimidin-6-amine
![6-bromo-2-methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid](images/201806/source_img/8226_G_1528158046949.jpg)
6-bromo-2-methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid
![ethyl 6-bromo-2-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate](images/201806/source_img/8225_G_1528158046670.jpg)
ethyl 6-bromo-2-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate
ethyl 3-amino-5-methyl-1H-pyrazole-4-carboxylate