![4-nitrobenzyl 2-(((tert-butyldimethylsilyl)oxy)methyl)-6，7-dihydropyrazolo[1，5-a]pyrazine-5(4H)-carboxylate](/static/images/placeholder.svg)
4-nitrobenzyl 2-(((tert-butyldimethylsilyl)oxy)methyl)-6，7-dihydropyrazolo[1，5-a]pyrazine-5(4H)-carboxylate
4-nitrobenzyl 2-(((tert-butyldimethylsilyl)oxy)methyl)-6，7-dihydropyrazolo[1，5-a]pyrazine-5(4H)-carboxylate
4-nitrobenzyl 2-(((tert-butyldimethylsilyl)oxy)methyl)-6，7-dihydropyrazolo[1，5-a]pyrazine-5(4H)-carboxylate 95%