CAS 52670-38-9 appears in our catalog under these names: 2-Ethynylaniline, 98%, Erlotinib Impurity 40, Erlotinib Impurity 110, 2–ethynylaniline, 2-Ethynylaniline, >97.0%(GC)(T). Offered by: Combi-blocks, Chemat Brand, Hubei YoungXin, GLPBio, TCI. Available pack sizes: 1g, 10g, 5g, 25g, 100g, on request, 10mg, 25mg.