CAS 13192-05-7 appears in our catalog under these names: 4–Methoxy–2，4–dioxobutanoic acid, 4-Methoxy-2,4-dioxobutanoic acid 96%, 4-Methoxy-2,4-dioxobutanoic acid, 95%, 95%, 4-Methoxy-2,4-dioxobutanoic acid, 95%. Offered by: GLPBio, Ambeed, Chemat, Fluorochem. Available pack sizes: 100mg, 250mg, 1g, 5g.