HCID12970152Benzyl tert-butyl 4-methylidenepyrazolidine-1,2-dicarboxylateCAS 503072-28-4 · CID 12970152 · C17H22N2O4C=C1CN(C(=O)OCc2ccccc2)N(C(=O)OC(C)(C)C)C1查看