Diphenhydramine hydrochloride Chemical name: A music cover chemical name: N- dimethyl-2- (diphenylmethoxy) formula: C17H21NO.HCl Molecular Weight: 291.8 CAS: 147-24-0 Assay: ≥99% Melting point: 168-172 (℃) Appearance: white crystalline powder, odorless, bitter taste, then there is a sense of paralysis. Packing: 25 kg / drum Quality Standard: British Pharmacopoeia, the Chinese Pharmacopoeia 2010 uses: (1) anti-histamine effect , H1 receptors and the organization can be released out of the competitive effects of histamine cells, in order to halt allergic reactions; (2) the activities of the central nervous system caused by the suppression sedative and hypnotic effects; (3) strengthen the role of antitussives; (4 ) also have anti-vertigo and anti-tremor paralysis. Product Name diphenhydramine hydrochloride Appearance white crystalline powder