CAS 380427-39-4 appears in our catalog under these names: Nintedanib impurity 4 97%, Nintedanib impurity 4, 99.73%, Methyl oxindole-7-carboxylate, 97%, Nintedanib Impurity 49, Methyl 2–oxoindoline–7–carboxylate. Offered by: Ambeed, MedChemExpress, Combi-blocks, Chemat Brand, GLPBio. Available pack sizes: 250mg, 1g, 5g, 10g, 25g, 100 mg, on request.