Diphenhydramine hydrochloride Product name: Diphenhydramine hydrochloride Other name: Benzhydramine hydrochloride; Dimedrolum; Benzhydramine; Diphenhydramine HCl; Diphenhydramine hydrochlorids CAS No.: 147-24-0 Assay: 99% Packing: 25kg/drum M.F.: C17H23Cl2NO M.W.: 328.2766 Appearance: White or white crystalline powder