CAS 871502-17-9 appears in our catalog under these names: [3-(3,5-Dimethyl-1h-pyrazol-1-yl)-6-oxopyridazin-1(6h)-yl]acetic acid, 95%, (3-(3,5-DImethyl-1h-pyrazol-1-yl)-6-oxopyridazin-1(6h)-yl)acetic acid, 95%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 1g, 5g.