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![7-methyl-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine](images/201806/source_img/10673_G_1528158574335.jpg)
7-methyl-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine
![1H,4H,5H,6H-cyclopenta[c]pyrazole](images/201806/source_img/10596_G_1528158571852.jpg)
1H,4H,5H,6H-cyclopenta[c]pyrazole
![4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine dihydrochloride](images/201806/source_img/7603_G_1528158014876.jpg)
4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine dihydrochloride
![6,7-Dihydro-4H-pyrazolo[5,1-c][1,4]oxazine-2-carboxylic acid](images/201806/source_img/1478_G_1528157250067.jpg)
6,7-Dihydro-4H-pyrazolo[5,1-c][1,4]oxazine-2-carboxylic acid
![6,7-Dihydro-4H-pyrazolo[5,1-c][1,4]oxazine-3-carboxylic acid](images/201806/source_img/1477_G_1528157250400.jpg)
6,7-Dihydro-4H-pyrazolo[5,1-c][1,4]oxazine-3-carboxylic acid
![ethyl 6,7-dihydro-5H-pyrazolo[5,1-b][1,3]oxazine-3-carboxylate](images/201806/source_img/480_G_1528157211655.jpg)
ethyl 6,7-dihydro-5H-pyrazolo[5,1-b][1,3]oxazine-3-carboxylate
![6,7-dihydro-5H-pyrazolo[5,1-b][1,3]oxazine-3-carboxylic acid](images/201806/source_img/478_G_1528157211633.jpg)
6,7-dihydro-5H-pyrazolo[5,1-b][1,3]oxazine-3-carboxylic acid