CAS 19763-90-7 appears in our catalog under these names: 3,4-Dichlorophenylhydrazine hydrochloride, 98+% , 3,4-Dichlorophenylhydrazine hydrochloride 98%, 3,4-Dichlorophenylhydrazine hydrochloride, 98%, 3,4-DICHLOROPHENYLHYDRAZINE HYDROCHLORI&, 3,4-Dichlorophenylhydrazine hydrochloride, 98%, 98%. Offered by: Thermo Scientific (Alfa Aesar), Ambeed, Chemat, Sigma-Aldrich, Fluorochem. Available pack sizes: 10g, 50g, 250g, 5g, 25g, 100g, 500g, 1000g.