CAS 17880-61-4 appears in our catalog under these names: Methyl 5-ethynylpyridine-2-carboxylate, Methyl 5-ethynylpicolinate 97%, Methyl 5-ethynylpicolinate, 97%, 97%, Methyl 5-ethynylpyridine-2-carboxylate, 95%. Offered by: Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 2,5g, 100mg, 250mg, 1g, 5g, 10g, 25g.