CAS 5466-23-9 appears in our catalog under these names: 4-Hydroxybenzaldehyde [(1e)-(4-hydroxyphenyl)methylene]hydrazone, 95%, 4,4'-Dihydroxybenzalazine, 4,4'-Dihydroxybenzalazine, min. 95 %, 1 g, 4,4'-Dihydroxybenzalazine, min. 95 %, 2 g, 4,4'-Dihydroxybenzalazine, min. 95 %, 5 g. Offered by: Combi-blocks, Biosynth, Roth. Available pack sizes: 1g, 5g, 2g.