Mebhydrolin (INN) or mebhydroline is an antihistamine. It is not available in the United States, but it is in various other countries under the brand names Bexidal (BD) and Diazolin (RU). It is used for symptomatic relief of allergic symptoms caused by histamine release, including nasal allergies and allergic dermatosis.

CAS：524-81-2
中文别名：5-苄基-2-甲基-2,3,4,5-四氢-1H-吡啶并[4,3-b]吲哚;
英文别名：1H-Pyrido[4,3-b]indole, 2,3,4,5-tetrahydro-2-methyl-5-(phenylmethyl)-;Mebhydroline [INN-French];Mebhydroline;9-benzyl-3-methyl-1,2,3,4-tetrahydro-3-carboline;Mebhidrolina [INN-Spanish];5-Benzyl-2,3,4,5-tetrahydro-2-methyl-1H-pyrido[4,3-b]indol;5-Benzyl-2-methyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole;Mebhydrolinum [INN-Latin];5-Benzyl-2-methyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indol;3-methyl-9-benzyl-1,2,3,4-tetrahydrocarboline;Mebhydrolin;EINECS 208-364-4;
分子式：C19H20N2
分子量：276.376
精确质量：276.163
Psa：8.17
Logp：3.6154

EINECS号：208-364-4

密度：1.12 g/cm3
沸点：856.1ºC at 760 mmHg
闪点：471.6ºC
折射率：1.633