CAS 868-57-5 appears in our catalog under these names: 2-Methylbutyric acid-methyl ester, Methyl DL–2–Methylbutyrate, Methyl 2-methylbutyrate, 98% , Methyl 2-methylbutanoate, Methyl DL-2-Methylbutyrate, >98.0%(GC). Offered by: Dr. Ehrenstorfer, GLPBio, Thermo Scientific (Alfa Aesar), Biosynth, TCI. Available pack sizes: 1ml, 100ml, 500ml, 25g, 100g, 0,5kg, 25ml, 1KG.