Anti-anaphylactic and anti-allergic 5-(2-hydroxy-3-thiopropoxy) chromone-2-carboxylic acids of the general formula ##STR1## wherein R is alkyl, alkenyl, hydroxyalkyl, cycloalkyl, cyclo-alkylalkyl, their alkali and alkaline-earth metal salts and 1-4 C alkyl esters as well as a process for the preparation thereof and pharmaceutical compositions containing them.
抗过敏和抗过敏反应的5-(2-羟基-3-
硫代丙氧基)
香豆素-2-
羧酸的一般式为##STR1##其中R为烷基,烯基,羟基烷基,环烷基,环烷基烷基,它们的碱
金属和碱土
金属盐以及1-4C烷基酯,以及一种制备它们的方法和含有它们的药物组合物。