CAS 33996-58-6 appears in our catalog under these names: rac-Levetiracetam, Levetiracetam Impurity 2, Etiracetam, >95% (HPLC), Etiracetam, Etiracetam, 99.88%. Offered by: Chemat Brand, TRC, GLPBio, Biosynth, MedChemExpress. Available pack sizes: on request, 100mg, 25mg, 50mg, 10mM (in 1ml dmso), 50 mg, 10mM/1mL, 100 mg.