(Monomethoxypolyethylene glycol succinimidyl)74-L-asparaginase 130167-69-0 Asparaginase, reaction product with succinic anhydride, esters with polyethylene glycol, monomethyl ether Oncaspar Pegaspargasa [INN-Spanish] Pegaspargase Pegaspargase [USAN:INN] Pegaspargasum [INN-Latin]