CAS 135883-34-0 appears in our catalog under these names: 1-tert-Butyl-3-ethynylbenzene, 1-(tert-Butyl)-3-ethynylbenzene 95%, 1-(tert-Butyl)-3-ethynylbenzene, 95%, 95%, 1-(tert-Butyl)-3-ethynylbenzene, 95%. Offered by: Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 1g, 100mg, 250mg.