盐酸左旋西替利嗪是一种化学物质，其分子式为C21H26Cl2N2O2，分子量为409.34934。

Levocetirizine; LEVOCETIRIZINE 2HCL; LEVOCETIRIZINE DIHCL;

LEVOCETIRIZINE HCL; LEVOCETRIZINE DIHYDROCHLORIDE; [2-[4-[(r)-(4-chlorophenyl)phenylmethyl]-1-piperazinyl]ethoxy]-acetic acid dihydrochloride; LevocetrizineHCl; LEVOCITIRIZINE DIHYDROCHLORIDE; Levo cetirzine dihydrochloride; Levocitirizine DiHCl; 4-{4-[(S)-(4-chlorophenyl)(phenyl)methyl]piperazin-1-yl}butanoic acid hydrochloride (1:1)

熔点 215-220°C