CAS 52418-50-5 appears in our catalog under these names: 4,4-Dimethylpent-2-ynoic acid, 4,4-Dimethylpent-2-ynoic acid 95%, 4,4-Dimethylpent-2-ynoic acid, 95%, 95%, 4,4-Dimethylpent-2-ynoic acid, 95%. Offered by: Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 5g, 250mg, 1g, 100mg, 10g.