1428234-33-6

spiro[cyclopropane-1,6-pyrazolo[5,1-b][1,3]oxazine]-3-carboxylic acid 1',3'-Dihydrospirocyclopropane-1,2'-pyrazolo[3,2-b][1,3]oxazine-5'-carboxyli Spiro[cyclopropane-1,6'(7'H)-[5H]pyrazolo[5,1-b][1,3]oxazine]-3'-carboxylic acid 5',7'-dihydrospiro[cyclopropane-1,6'-pyrazolo[3,2- b][1,3]oxazine]-3'-carboxylic acid