The present invention relates to an alkaline earth metal salt or an organic amine salt of a compound represented by the formula [I]: wherein R1 and R2 are each a hydrogen atom, a halogen atom, or an optionally substituted linear hydrocarbon group; ring A is an optionally further substituted benzene ring; B is an optionally substituted benzene ring; R is a carboxyl group or a linear hydrocarbon group substituted with a carboxyl group and the like.
本发明涉及一种由式[I]表示的化合物的碱土
金属盐或有机胺盐,其中R1和R2分别是氢原子、卤素原子或可选取代的线性烃基;环A为可选取代的苯环;B为可选取代的苯环;R为羧基或取代有羧基的线性烃基等。